Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4ebb5816dd0f0e0…

MALICIOUS

PDF

72.0 KB Created: 2020-08-04 20:13:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79d0390f30e7ac37552c407b8b2bffdc SHA-1: 70de4c7dba8ab17ad2c88f4177c2c1bfdf3f8711 SHA-256: f4ebb5816dd0f0e0a23df5c7547041e5bcac8e2193c3572344495dde7ba59354
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=lan+topology+pdf, which is presented as a "Lan topology pdf" to deceive the user. The document body is heavily obfuscated, but the presence of the malicious URL and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic strongly suggest a phishing or redirection attack.

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.cc/pify?keyword=lan+topology+pdf In PDF document text
    • http://files.regenbiopharmainc.com/uploads/1/3/1/3/131381540/840e68c872d5.pdfIn PDF document text
    • http://files.cejdentalaccountants.co.uk/uploads/1/3/1/4/131436956/runokunivilejaxinabe.pdfIn PDF document text
    • http://files.designphotographyportrait.com/uploads/1/3/0/7/130738700/lexiweteriwu.pdfIn PDF document text
    • http://files.gracechurchchanute.org/uploads/1/3/1/0/131070309/kisukobit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/77086391710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0669/5320/files/jewapuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/26389661014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/nsou_pg_assignment_front_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5592/1822/files/vafadidixenig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/wivigonowiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2041/7181/files/kenpo_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9281/1681/files/liwetabamopabuwijupapipan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/femepotufitaxaturu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5038/6079/files/71096209024.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD031 4600 bytes
SHA-256: b7022c870b955de53443aa267653d44c3a01ddd94e51a8e1f44758bf66236edd
font_01_sfnt_off0000dfec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEC 10820 bytes
SHA-256: 60a2c6b4ed89e0944c141f352cd32a43186c0a1687f72a136098d51659e69a86
font_02_sfnt_off000104ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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