Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd60564d2eb37ac…

MALICIOUS

PDF

72.3 KB Created: 2021-09-06 18:28:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: b1c6d78d322c90d43a31a31b7736ed39 SHA-1: f2470a70470976bc26eabc7fe1465234fa0b6637 SHA-256: 7cd60564d2eb37ac64db800e23233b47c0446d124e26feab65d1525ee137a83b
164 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm pointing to numerous external PDF files, some hosted on compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • 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 http://hani-bee.com/userfiles/files/32746743940.pdf In PDF document text
    • http://shangrilayunnan.com/ckfinder/userfiles/files/judivezofulurupi.pdfIn PDF document text
    • http://iqlacpro.vn/emotive/upload/files/76003535869.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4afc29f25---37097622756.pdfIn PDF document text
    • http://inistor.com/ufiles/files/66278806880.pdfIn PDF document text
    • http://446888.top/userfiles/file/kebel.pdfIn PDF document text
    • http://bodymindspiritconnection.org/clients/5/53/53f1eac0d8ee32431a47b4e1af774f29/File/39859384362.pdfIn PDF document text
    • http://m-s-g.ru/userfiles/files/tixunaletuleranudegudeje.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/441675245a78a4254052cfca8c8e7781/xewagowog.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da657aa9b6---33828760103.pdfIn PDF document text
    • https://namratalakhotia.com/userfiles/files/44327671967.pdfIn PDF document text
    • https://harkakotony.hu/UserFiles/file/79625531100.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/ca51d4789369f1a99017dbc8fb794c51/febewapatitenetuno.pdfIn PDF document text
    • http://bellamy.tw/uploads/files/202108161712434705.pdfIn PDF document text
    • http://cmtoolsrental.com/user_img/files/xakit.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/se39ni7fuacro2tgm0vngcc094/vimuwuredusozanenegazim.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/0i1etf64rgt7727qii1an1svo4/sabanagemutofuvab.pdfIn PDF document text
    • http://ozkayalarlojistik.com/userfiles/file/76640676993.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/vi4279joe5oqolllfin67qvmf2/zetedokotinugit.pdfIn PDF document text
    • https://aldapa.eus/files/galeria/files/33806005518.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/16573427472.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=motivation+books+pdf+free+downloadPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB86D 10868 bytes
SHA-256: dcbe29e3b2ac98e3e05d93a01580dc419de2fcc437258bcc66a6cca100787440
font_01_sfnt_off0000d187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD187 16492 bytes
SHA-256: 6b3b6fb6721114ead25eaf77c75089a4ed5e3fa7da15aaaca7562eb529a17a3c
font_02_sfnt_off0000fb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.