Malicious PDF — malware analysis report

Static analysis result for SHA-256 6318913ce1f17f53…

MALICIOUS

PDF

60.0 KB Created: 2020-08-26 02:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec64204f2f865593c3296527b02123d8 SHA-1: 8959491b5b57f22124699729f0e6a79c7b33abf3 SHA-256: 6318913ce1f17f53276e4af735dd4139fb4ca590087774384e4f83e6ece54e53
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, specifically advertising a 'free download' for a service manual. One of the primary links, https://ttraff.cc/pify?keyword=cummins+m11+service+manual+free+down, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to drive traffic to malicious or deceptive content. The ML classifier also strongly indicated maliciousness.

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=cummins+m11+service+manual+free+down In PDF document text
    • http://merezajod.mathzaptutoring.com/uploads/1/3/1/4/131452883/godevevesodumisu.pdfIn PDF document text
    • http://files.floridatestadmin.com/uploads/1/3/1/8/131856247/392845.pdfIn PDF document text
    • http://files.theyogavoice.com/uploads/1/3/1/6/131637306/pufinimedere-depurimezom.pdfIn PDF document text
    • http://files.roselischool.org/uploads/1/3/1/3/131382243/9082655.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7125/8278/files/adobe_premiere_cracked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2029/4043/files/11846609885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/vaccine_adjuvants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8433/2710/files/minecraft_pe_ids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/sedra_smith_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/ccna_voice_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/rawajajuwekegipaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8657/5771/files/geode_invitation_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9575/files/4448093551.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000988c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x988C 5196 bytes
SHA-256: ccf940b92a24e6ec347f2d1e2ae7a2851b748b331e89cdf091b24e3c0411f4d8
font_01_sfnt_off0000aa29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA29 13484 bytes
SHA-256: 807d9bd20cf09c72da68d51aaa409c5996d3a7fdc601083ce735b3c07c3eab98
font_02_sfnt_off0000d478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD478 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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