Malicious PDF — malware analysis report

Static analysis result for SHA-256 84091461045efc7e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-11 04:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 359a14f8c5235d0f7115fb61348e0069 SHA-1: 5f7b8a540dc584aa24ca044a5d03ce7b53866c12 SHA-256: 84091461045efc7edd3f299c253271e213bd33fe2d04b3753e9906f8d8f808ca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though obfuscated, contains a URL that matches the malicious redirector, suggesting a phishing or scam attempt. The presence of multiple links to external PDFs, some hosted on Shopify, indicates a link farm designed to attract traffic, likely for malicious purposes.

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=basic+biochemistry+questions+and+answers+pdf In PDF document text
    • http://files.ehheerunner.com/uploads/1/3/1/8/131857983/1315ec458de.pdfIn PDF document text
    • http://files.gareiswelding.com/uploads/1/3/1/3/131379219/fatumunat-figuzivix-xovitavejib.pdfIn PDF document text
    • http://files.newmorningacres.com/uploads/1/3/2/6/132680962/fitusemef-mifuzejonaxif-limagawebavupo.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/1/0433/6785/8334/files/12874883401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3929/2582/files/calendario_laboral_2020_catalua.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5570/2425/files/tuzedudolirezegawikifesom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/rofapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/jegakolivaxikizegexemeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/tigogaxinowuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/91218838459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/donosigedulonewobota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/vokifase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/fuwilutitazefolapogipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/durodejaxil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/91343085727.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 3

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_off000067a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A2 5872 bytes
SHA-256: be6eccdb6ce6a30913b4be1218171d4d790aa5ec2cd6d2126f63cad3cb39aec8
font_01_sfnt_off00007b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7E 10524 bytes
SHA-256: f75098269aae99b4f0a366efbfe0acbdd08a3356e24df32d2eee10a191d4ced0

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