Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef726a587a6ac267…

MALICIOUS

PDF

32.5 KB Created: 2020-08-25 06:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81989e94ef62ed9aaac2d2af38751f0a SHA-1: ab4c68954bb7896786fb88865470052d5aabae83 SHA-256: ef726a587a6ac267fa930496a5fd3e79a019aba881896c0559706a641cb714d2
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing lures. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is further obfuscated by a keyword related to a movie. The document body, though heavily corrupted, contains the same movie-related keyword and the malicious URL, reinforcing the lure. The presence of a link farm further suggests a malicious intent to drive traffic to potentially harmful sites.

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=baaghi+2016+full+movie+free++filmyzilla In PDF document text
    • http://files.wardlawspoultryfarm.com/uploads/1/3/1/3/131397987/tofarekase-dadesuseguba.pdfIn PDF document text
    • http://files.cpaforfamilywealth.com/uploads/1/3/1/1/131164573/631151.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/1/0436/5336/5910/files/24837449415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/90342552140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/zojifekizimetewide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1218/6531/files/geistige_behinderung_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/muworamobedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/57603411204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/kufaxiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/62958710410.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 7

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_off0000404d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x404D 5744 bytes
SHA-256: 691b3caae8f0cc7d1df00b4688a240c88ff4568b15e79108866ebafa0149974b
font_01_sfnt_off000053d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D8 9780 bytes
SHA-256: 2933fe74f46946c3b7a0b4df9046b61850efbea35a2a25857cd7ee36a11c2d83

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