Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ffbd7d2ae128ac…

MALICIOUS

PDF

74.8 KB Created: 2020-08-09 01:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ffc5fa8183578bbb1bde6a4e9a948da SHA-1: 76dd1ddba425efbd7825e06a2f4e4335a172292e SHA-256: e6ffbd7d2ae128ac356e00d5c901877934b9d7e1fa3c18d3964c572ce2b7265c
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains numerous external links. A critical heuristic firing indicates that these links point to a known malicious redirector service, suggesting a link farm or phishing attempt. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. No scripts were extracted from this sample.

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=general+characteristics+of+archaebacteria+pdf In PDF document text
    • http://files.b2autodesigns.com/uploads/1/3/0/7/130775977/debut.pdfIn PDF document text
    • http://files.murphybocce.com/uploads/1/3/2/6/132695569/8b9557c431721.pdfIn PDF document text
    • http://files.allstarscomedyentertainment.com/uploads/1/3/0/7/130738720/vurutuse.pdfIn PDF document text
    • http://files.affordablebarndoors.com/uploads/1/3/2/7/132712324/kemuzagaxurupuw.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/1/0437/4927/7845/files/68902823437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/79732132386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/beverage_industry_in_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4292/9821/files/30298246663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/halliday_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/kebekeduvubusuxaputegex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8899/3699/files/bakuriguzexavop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0623/7604/files/anbar_awakening.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/xatorexam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8089/0008/files/24939049489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/26973898426.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_off0000dd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6E 5416 bytes
SHA-256: 072a8b91f83f5c628b869e09718db00ca5ac957e18db70a982d468f9b55e6322
font_01_sfnt_off0000efc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC8 14752 bytes
SHA-256: 747f1a5355bb03306c7c5c6719b68922bba09e53ffff182cd988237169a16b02

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