Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b7ee3f410776153…

MALICIOUS

PDF

69.6 KB Created: 2020-12-07 14:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f7e9a31318e176da45b4a2faf805ee6b SHA-1: fc1898a6cf47910c87553300f408aa159ebc690e SHA-256: 3b7ee3f41077615342dcf784086f63366d21bcf1f67d0d36183720b366ac3507
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. This, combined with ML classification and ClamAV detection, strongly suggests a phishing or malware distribution attempt. The embedded URL is likely intended to lead the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://ggtraff.ru/123?utm_term=iso+31000+pdf+download In PDF document text
    • https://static.s123-cdn-static.com/uploads/4475872/normal_5fcb7b7f760f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407313/normal_5fb95b252aad0.pdfIn PDF document text
    • https://gokaveruziniva.weebly.com/uploads/1/3/4/5/134580144/4926807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f9e3bffa4fd3.pdfIn PDF document text
    • https://tigizojotajubum.weebly.com/uploads/1/3/4/4/134489046/givulowej-wavaku.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/jazatozesaja.pdfIn PDF document text
    • https://jatuvukaxakepu.weebly.com/uploads/1/3/4/3/134313635/9003599.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e70d1452f90b7fe56088/t/5fc44b79a97599144e810e3b/1606699897919/applied_logistic_regression_analysis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5baadf7cf8c75404bcdf6/t/5fc9e4ac2e4d7f67ca2dc508/1607066809508/galaxy_attack_space_shooter_guide.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D8 5328 bytes
SHA-256: 101565e91fe9038dca50c07d30d3ef927d046144bb188db3eb68c04e55bb161d
font_01_sfnt_off0000e527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE527 10500 bytes
SHA-256: acbedc560707b08f7a48999261f89c526c0d8eec16f5779e1545cacbb87257a1

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