Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc0ab6ec9138f34…

MALICIOUS

PDF

42.3 KB Created: 2020-08-01 16:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80f09134aaa00fee85d1d3b2a60376a5 SHA-1: 3084fcda489565c9dda0777d0a22221178950fad SHA-256: 6dc0ab6ec9138f3411358530af9d1863635a95af84d1eff86944a73708d2e1b8
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, disguised as academic book downloads. The primary redirector URL is 'https://ttraff.ru/pify?keyword=invitation+to+computer+science+7th+edition+pdf', which is flagged as malicious. This suggests a phishing or malware distribution campaign using a link farm to obscure the final destination.

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=invitation+to+computer+science+7th+edition+pdf In PDF document text
    • http://files.barrons-independent.com/uploads/1/3/0/9/130969775/kunapa-nubavase.pdfIn PDF document text
    • http://files.onehealthepigenomics.com/uploads/1/3/1/4/131453124/9169272.pdfIn PDF document text
    • http://files.melissamakesmoves.com/uploads/1/3/1/4/131437530/bafowuxilan.pdfIn PDF document text
    • http://files.prabeer.org/uploads/1/3/0/7/130740158/38bd36c41.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/1/0428/7656/7711/files/53791552612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/vibavowowobujelazigarasix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/salesforce_lightning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/6713469803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92904811518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/95961515045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/faxirojemube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/kyocera_cell_phones_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3457/files/sibukivalufoxakim.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_off000064c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C7 5440 bytes
SHA-256: abe1d403979fbed068b75c4858bd3b3f8daa8cd62905e6320d5b3f4f4e3b3393
font_01_sfnt_off0000772d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772D 10336 bytes
SHA-256: 831425c020310b592f1a054f857b894635ced6b978bc9a8fe876bffb8c625f9d

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