Malicious PDF — malware analysis report

Static analysis result for SHA-256 a40005c02f0fd877…

MALICIOUS

PDF

64.7 KB Created: 2020-08-12 18:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92a4ab937858fa5ce98f45e3e5c51dfa SHA-1: ed5203b7d44b0f56bf65c46493d72dda9828476f SHA-256: a40005c02f0fd877e285e55a778fc82b28d912ad89201cba995bc9c79229b0a2
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 'https://ttraff.ru/pify?keyword=caracteristicas+biologicas+del+adulto+mayor+pdf'. Additionally, another critical heuristic indicates the PDF hosts a mass external link farm, suggesting an attempt to manipulate search engine results or distribute content through numerous links. The document body, though partially corrupted, contains the same URL, reinforcing the malicious intent.

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=caracteristicas+biologicas+del+adulto+mayor+pdf In PDF document text
    • http://files.xiphospress.com/uploads/1/3/1/8/131871658/mewarumotip.pdfIn PDF document text
    • http://files.12holyapostles.org/uploads/1/3/1/4/131453944/2212051.pdfIn PDF document text
    • http://sumasujop.harmonyhallonriverside.com/uploads/1/3/1/3/131398020/3245362.pdfIn PDF document text
    • http://files.arteology.us/uploads/1/3/0/8/130813710/7994731.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/1/0434/1828/8277/files/96705157303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/luigis_mansion_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0361/6165/files/visodaguvinagifitevon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/lebazape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/lizetigilafirorogosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/risukatuwagiranir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/notawureduroze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3759/6575/files/semukere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2643/1652/files/case_files_emergency_medicine_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/human_anatomy_and_physiology_of_nervous_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/robubijalarowipej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25322908130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5582/3525/files/28404557219.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 4

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_off0000bbb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB5 5620 bytes
SHA-256: da49a0e7a07d46a189b243b9d3db28c76d08e59d024b8b229beb94f681c33654
font_01_sfnt_off0000ceb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB6 11276 bytes
SHA-256: a0ad9c53dd42018ff130c19561a02a10c69064e2cf6b41241e8f15aa96cf2e06

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