Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a1a1bb417d8946…

MALICIOUS

PDF

358.5 KB Created: 2020-09-18 23:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61abf35baadc26d56ca77d6fe2589862 SHA-1: d693fc2c694ba3f76cbf118b850bdaf7c5ce36af SHA-256: c2a1a1bb417d89462195b6df15384495ed95da9fbc25888575dea7f91f3110cd
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL 'https://ttraff.ru/wb?keyword=bandura%201989%20reference' is the primary indicator of malicious intent. This suggests the document is designed to lure the user to a potentially harmful website. Several other suspicious URLs were also extracted, further supporting the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/wb?keyword=bandura%201989%20reference In PDF document text
    • http://files.incident-services.com/uploads/1/3/1/1/131163832/varixumuromibo_jitifovunisop_perer_xuruz.pdfIn PDF document text
    • http://rabemadi.orchid-avenue.net/uploads/1/3/2/6/132695569/481b2c1fd0b.pdfIn PDF document text
    • http://besinefo.agentflamingo.com/uploads/1/3/2/6/132680813/9789628.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0934/2614/files/fallout_3_weaponsmith_achievement_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/jimozedupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8717/5588/files/harbor_freight_winch_mount_receiver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/96895742569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/konofanigepivixogegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1868/1496/files/38237491731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/cst_performance_suspension_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4488/6945/files/safizakuvigevakupejesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6633/8727/files/pathfinder_style_feat_ranged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/piresa.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53914 5256 bytes
SHA-256: 92cfc6038ad0f55b22707a51f4bf6ef55676c0f9067e33d2603141dd7c0b2728
font_01_sfnt_off00054b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54B0B 12652 bytes
SHA-256: 7ec706a5deb397a01bf3706569a3beaad21c7d8f0e97a712999ada84316e225c
font_02_sfnt_off000573ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x573EA 16448 bytes
SHA-256: 4972c892cf783310df7ebe7a43044f7b4e4d650808add06809858f2f0e6eeb09

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