Malicious PDF — malware analysis report

Static analysis result for SHA-256 f574cda6070ccbea…

MALICIOUS

PDF

88.3 KB Created: 2021-08-19 11:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: eabb01346705da3e9317fe30760810a8 SHA-1: 274639f5bc0c1178eb23f4bf9ec6410792618665 SHA-256: f574cda6070ccbea7ca2a214ea8c2e15b47b696d02ef08020fd3ab5ad70fe7c4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to various domains, many of which appear to be compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The heuristic 'SE_URGENCY_LURE' also suggests the document may employ deceptive tactics to prompt user interaction with these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://huntic.ru/uplcv?utm_term=can+god+speak+to+us+in+dreams PDF link annotation
    • http://bearings-home.com/userfiles/file/botipuzi.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079df5802373---91908509981.pdfIn PDF document text
    • https://alternativecarrepair.nl/userfiles/file/nolomifuder.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160edb62e693ab---gavonosedijikesa.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/58ebf580c650225c39342f01e7ea49bc/vobire.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/7220269158.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af23a55eec---68146808592.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/8918637620.pdfIn PDF document text
    • http://abwrva.com/uploads/files/17650986693.pdfIn PDF document text
    • https://network-italia.com/file/14693950491.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ca8962a4c---gejufaka.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/b4ab24b81652a50d95ae31c84fbd0b4d/nawugifipoje.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/97716894282.pdfIn PDF document text
    • https://magazinul-de-instalatii-sanitare.ro/app/webroot/files/userfiles/files/tavafapusajabidatel.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/a46a419ea6e453a28b0f877f6f93e838/23091478741.pdfIn PDF document text
    • http://sherwoodchambergolf.org/ckfinder/userfiles/files/barewafuwotapewozevopu.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/e3jngjiusql28pdj6jtjr4kvl6/vizuwukimokekixej.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/bidepuwajovozufe.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/kajep.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/ao0r90rf2fg9j4g5bpo20pl441/15311029981.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/40385562329.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090522c134c6---piwirazudaxadis.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/d054vji9n8oi9ff0sd37glg1gg/miwazogobatomero.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/f37039a3b44aa934678700b57057c3ee/58658695321.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65A 10912 bytes
SHA-256: a8033aad35019eba36efef3f6ebbd699f542f6d7560794f85193b6ef1efb23e5
font_01_sfnt_off00010f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7A 16720 bytes
SHA-256: 4952b1e9cd1c576f2e5d2b1e68e4511b7075792c6be756d302b701e3de53066a
font_02_sfnt_off00013b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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