Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6fe25f78832791…

MALICIOUS

PDF

39.4 KB Created: 2020-09-18 03:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: adc232528fdb3ba72698921252e14f42 SHA-1: da088feb75396b9c431768d614670786be46f76b SHA-256: 7f6fe25f7883279163f93f97f6891c2e3a2cca73c446d4a069571d8544284820
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, masquerading as an 'answer key'. A critical heuristic identified a link to a known malicious redirector, 'ttraff.club', which is likely used to funnel victims to malicious sites. The presence of a large number of PDF links also suggests a link farm or SEO manipulation tactic to increase visibility.

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.club/wix?keyword=2.1+classifying+matter+answer+key In PDF document text
    • http://files.beachstreetboutiqueapparel.com/uploads/1/3/0/7/130739835/xubaxiwik.pdfIn PDF document text
    • http://files.fireflowerproductions.com/uploads/1/3/2/3/132303219/kodekobudegip.pdfIn PDF document text
    • http://files.fraserlegendsfishing.com/uploads/1/3/1/4/131483305/vebodavu.pdfIn PDF document text
    • http://gabozib.sarahinscience.com/uploads/1/3/2/6/132696067/vojowemira_gopufigulowis_fulirawiro_magimeke.pdfIn PDF document text
    • http://nolepij.villageofbenson.com/uploads/1/3/1/3/131384055/0d1bba995.pdfIn PDF document text
    • http://kitet.studentfinanceboard.com/uploads/1/3/1/0/131069839/vovid.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/1/0440/6794/6648/files/jurikoxevibaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5092/0855/files/vokexusamasoxiwosamuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4668/1248/files/8336293511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/4788/6504/files/nobedigizagoborivupiluwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6199/1829/files/bach_flower_remedies_book_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6730/9206/files/the_gender_tag_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/99588497700.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 7

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_off00005a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5A 5580 bytes
SHA-256: 34b32725c6d27773651d76910d6bd2b9f471fa960780c71e2b3b164af54c5e1b
font_01_sfnt_off00006d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 10320 bytes
SHA-256: 1b2a0fbc48a8e0f831fbf2c2828f2539d15705430fdcaf3e08def85395aca77d

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