Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8b7084596750e6…

MALICIOUS

PDF

43.4 KB Created: 2020-08-06 21:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6940b8b237d447038a594164110028c7 SHA-1: 71d15e9acb753163a71c5906409ea8ec45d9e411 SHA-256: 6f8b7084596750e6c5bac2b8546e8e08e64150be67d06e06f3ec30f693aa9543
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating an attempt to lead users to malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and the heuristic firings suggest a phishing or scam attempt disguised as a document download.

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=bolt+tightening+sequence+pdf In PDF document text
    • http://soxapu.rfcjournalism.com/uploads/1/3/2/7/132710797/vawesuko-sititirajova.pdfIn PDF document text
    • http://files.makeyourselfageless.com/uploads/1/3/1/6/131606687/modudos.pdfIn PDF document text
    • http://files.mondayeveningconcerts.org/uploads/1/3/1/6/131636807/7165778.pdfIn PDF document text
    • http://files.vacationhome4u.com/uploads/1/3/2/6/132682295/kanewugosuw.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/1/0431/0673/0144/files/16768415064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/wixilaxifizovatasakazole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/bebudijodexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/ceat_engine_5._6._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0489/8978/files/illinois_motor_vehicle_bill_of_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/7733188816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/xotokimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/sign_with_certificate_adobe_reader_dc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7968/6549/files/nugufasizujokevovanum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/158552975.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_off00005f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6A 5284 bytes
SHA-256: 1a034a8b8b46d3511062014fdb876dbbbd594c412334c9c0228a3cdc94f34229
font_01_sfnt_off00007167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7167 14232 bytes
SHA-256: 7bc0bfd49c20eba89a15cd47083be04b8b05a933a1cc3c8ce3d92f258908d941

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