Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bc1ef0907b9b0ca…

MALICIOUS

PDF

45.9 KB Created: 2020-08-06 23:13:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61636e5405f8e95b57af47c7d50d7758 SHA-1: d8227bd44a16c60d0149fbc1eebefaabf0961e76 SHA-256: 6bc1ef0907b9b0ca0819d2578792d1219c8d6d1b3184316a5ea3e3dfdcf16667
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector identified as 'https://ttraff.ru/pify?keyword=rigorous+curriculum+design+pdf'. This redirector is flagged as malicious and part of a link farm, suggesting an attempt to drive traffic to potentially harmful sites. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed to lead users to malicious infrastructure.

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=rigorous+curriculum+design+pdf In PDF document text
    • http://files.fatherspride.org/uploads/1/3/1/1/131164351/xagokomujokadep.pdfIn PDF document text
    • http://files.wicollaborative.org/uploads/1/3/2/6/132695663/8321860.pdfIn PDF document text
    • http://files.peeblesfootball.com/uploads/1/3/1/4/131453354/23217837e6.pdfIn PDF document text
    • http://files.walkwaysandbeyond.com/uploads/1/3/1/8/131859895/6351357.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/1/0429/3427/2159/files/pesejozabebakevisedepov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/milixakepuratabutuwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/simple_and_clean_lyrics_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4168/3618/files/97186908081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/nccer_electrical_level_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/bujimigovari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/sujatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1535/5042/files/70799154859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/letobuwed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7573/7502/files/life_selector_credits_hack_tool.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
🗂 Part of campaign: fatherspride.org 3 samples

Related samples 5

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_off0000753a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753A 5272 bytes
SHA-256: 3dce8292a5e06164d0c5410b4c18e9a592a41d20510ec1fa269359ee9266ca1a
font_01_sfnt_off00008721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8721 10308 bytes
SHA-256: f1edce6d420e386dd08624dce7a4439d8623e3d3a967bf26f8cf8e5a29538019

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