Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ea9d3dc09e78b6…

MALICIOUS

PDF

92.8 KB Created: 2021-06-26 12:26:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: b3ca9e47db3e8fb05c0643be32438e0e SHA-1: 7ca76cb2609c0b4f3c72202f4258ae808e7bb6fc SHA-256: 67ea9d3dc09e78b69cddb63ed9841716366034e02c60fa6173409755883c5531
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to compromised WordPress sites, impersonating cloud document sharing services to lure users. The presence of a download button heuristic further supports a phishing or malware delivery attempt. ClamAV detection and ML classification confirm the malicious nature of the file, likely a phishing document designed to lead users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c044f911051---lukagar.pdf In PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c188e4a1627---babemagokozegobe.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/v4ddg2srvj5qo7tckdo1vs36sp/zeliwazevobifevokofupudit.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/609389f3bad65cc7df5c7a82439dd8f7/73768951526.pdfIn PDF document text
    • http://ithaca1962.com/clients/41687/File/lenabidivejol.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/bc3d201789d616e5e30a0f947ae23088/75307573347.pdfIn PDF document text
    • https://p87.hu/files/88046592040.pdfIn PDF document text
    • https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/3ef09c3836ff90c4d323844213496072/57235004351.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160764df173b7d---takavemixajipewinurija.pdfIn PDF document text
    • http://armanetti.com/images/1174477559.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/b294e738bef719bc0f86dea25a2b5b88/kibaladisalejiror.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/7096e93cafb77367b2298ef2e85580d3/60316188049.pdfIn PDF document text
    • http://richfield1962.com/clients/4/47/47516dc9824f3897220912ef171c404f/File/35351032387.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/zevujinetolaguniloz.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/6a46c0f92fe377655dfa73e01b384239/bedorefonometudeg.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/edcadecc5785dd6750f4d6550d739a37/mezazazigox.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/65bd7eac848c5b3b88810f30bdb754ff/bupitusaganapuxiwilawukok.pdfIn PDF document text
    • https://naucharts.com/ckfinder/userfiles/files/denereliboduginikokifufod.pdfIn PDF document text
    • http://lezeckastenakosice.sk/upload/files/30759898488.pdfIn PDF document text
    • http://praguetransfer.com/files/file/94897401097.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d5c1e3867---wuwewudalipodadobuje.pdfIn PDF document text
    • http://konditsionery-reutov.ru/upload_picture/file/wimibugetefogologav.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/j0u8mtrrp5g0ur5o0i8rg117vr/jebupijogonivovawonep.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=read+only+pdf+viewerPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF178 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10989 16192 bytes
SHA-256: 55ef46c52afd6e147d1a63466e71b2626c0463547b674efce9e2c808a9b36e78
font_02_sfnt_off00011f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F45 10536 bytes
SHA-256: 94ec67391dcf20eb747135539722ccf77f68c05aee66084d8c93f35f06a60fcc
font_03_sfnt_off0001375c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1375C 17652 bytes
SHA-256: a38d2bd77fe0997e8fd5eacba2c573382a7807f45dfa8b1c8775d5d690cf17f8

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