Malicious PDF — malware analysis report

Static analysis result for SHA-256 966afc51a669a733…

MALICIOUS

PDF

48.1 KB Created: 2020-08-05 05:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4091a71b10aac0c0fe886e8a6767730c SHA-1: 62fc11931cd89b1e06ad38993baefddfb933ee10 SHA-256: 966afc51a669a733a1096b4e62c2b3709bcf907e8f7b1f6132c4b0d27c3997cb
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is embedded within the document body, suggesting an attempt to lure the user to a malicious site. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning tactic. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=logical+reasoning+and+analytical+ability+for+upsc+pdf In PDF document text
    • http://files.kris-ginadesigns.com/uploads/1/3/2/6/132695575/laxulavivosubeg_dibopagofofi_kapekewuf_gabirofawup.pdfIn PDF document text
    • http://files.hightstownhsbands.org/uploads/1/3/2/6/132695397/6a298ea01dd.pdfIn PDF document text
    • http://files.debadavis.com/uploads/1/3/1/3/131378921/tesulo-tevotefopasezad-mufawozom.pdfIn PDF document text
    • http://files.riversiderainier.com/uploads/1/3/2/7/132740275/3116463.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/1/0440/0631/0046/files/78993660982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3472/8853/files/c_function_overloading.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/29456599332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/nalugeturup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/pabonupolasoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3782/files/ninazizuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6886/6208/files/longman_writer_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/mubotutefipufopagipule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7413/9813/files/wawewoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3735/files/fefekizivadami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/how_to_make_look_like_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5721/6678/files/judupikizupejum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/97972296812.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 5

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_off00007b17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B17 5504 bytes
SHA-256: feebd29d2d524417a71792b3ca1e09e2e380084a8e70faf7a56bd01a7545749d
font_01_sfnt_off00008de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE9 10936 bytes
SHA-256: c645d2381c4118e4a54f03a6ce4b07c7d1712b22f9d777dcc8bc55af15d6b2d7

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