Malicious PDF — malware analysis report

Static analysis result for SHA-256 2363fbae21a20961…

MALICIOUS

PDF

38.3 KB Created: 2020-07-30 19:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cb5325da949233577b761972b26b7a8 SHA-1: 78b7fdafd219fb8f62c5d6174b4c31e570407ecc SHA-256: 2363fbae21a20961d7be51252f40c523e814930e2580c45bdcdcad4e69397483
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.ru/pify?keyword=bios+instant+notes+genetics+pdf', is flagged as a malicious redirector. The document body is heavily obfuscated and does not provide clear textual content, but the presence of numerous external links strongly suggests a malicious intent, likely to drive traffic to compromised or malicious 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=bios+instant+notes+genetics+pdf In PDF document text
    • http://files.nigerianwriters.info/uploads/1/3/0/7/130775011/tonasov.pdfIn PDF document text
    • http://files.dreambiztestdrive.com/uploads/1/3/1/0/131071114/497532.pdfIn PDF document text
    • http://files.ruthstoneartist.com/uploads/1/3/0/7/130775346/zavotesadigifopo.pdfIn PDF document text
    • http://files.drawingthelinewithlove.com/uploads/1/3/0/7/130738622/xukumaruvoke_sumujivigowesij.pdfIn PDF document text
    • http://files.lafayetterealestatehomes.com/uploads/1/3/0/9/130968950/097a7521910ba9.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/1/0433/5419/4070/files/67594518958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/20714957271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/42901313210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/22525238861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/24259933629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/25293233051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/39574643718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/82813801044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/zatilupubuduzixegaloluxop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/rikegedonejafipupudunezal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/17051775062.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_off00005a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4C 5032 bytes
SHA-256: a6079f42663e8fbb97b5e2316c25491eba738270ed8e8b6149eeb7e08c506f83
font_01_sfnt_off00006b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 9484 bytes
SHA-256: 6182c0ff6ba772c8b5212c3caa484ad3a8e7ebe192d7175eca38ffc5e110832a

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