Malicious PDF — malware analysis report

Static analysis result for SHA-256 212bac837e8cfbbb…

MALICIOUS

PDF

55.6 KB Created: 2020-08-16 19:04:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a28afb467d4113a3567faf6de8ae4a74 SHA-1: fc7f7f8badc03cdb602bafd83254d86975a2160c SHA-256: 212bac837e8cfbbb53751c2ba47b92a0c22ad319cf0557fcadb52482e93d1f77
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, specifically 'ttraff.ru', which is disguised with a keyword related to 'photoshop animation psd'. This suggests a lure to a phishing or malware distribution site. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning tactic to increase visibility. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/pify?keyword=photoshop+animation+psd In PDF document text
    • http://files.aquajunctionswimschool.com/uploads/1/3/2/6/132695445/jisaraxavetupujige.pdfIn PDF document text
    • http://files.pleasantlivingmagazine.com/uploads/1/3/0/7/130774990/8eb868aca3b8.pdfIn PDF document text
    • http://files.westkarateofweirton.com/uploads/1/3/1/0/131070389/wopoloxev.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/1/0434/0436/1884/files/38935913048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6818/6015/files/59237594182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/atwood_furnace_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/xaxobakuxatir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9118/8117/files/dams_biochemistry_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/55576088982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6998/9279/files/rudop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/driver_navigator_keygen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7093/8533/files/19966779951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/zigatafifojukubuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0824/4381/files/siyavula_maths_textbook_grade_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5865/7430/files/30173465431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3721/2319/files/photosynthesis_and_cellular_respiration_quiz_9th_grade.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 3

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_off00009bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC1 5072 bytes
SHA-256: 5676387933a9b0bbe6e196e1c91356547ce55f1bfdf50a10842714e4c17a92ec
font_01_sfnt_off0000accb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACCB 10668 bytes
SHA-256: 72018a6a1da75e8af8fd9d85670b665769a451391bbac22de3ec8fdea3d97ad9

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