Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c7c3c93f5d498b9…

MALICIOUS

PDF

46.0 KB Created: 2020-08-08 16:31:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b825bfddf1f4e52973b0a59ccafc355 SHA-1: da939ebb64918bfd2b54178f171145183137c888 SHA-256: 6c7c3c93f5d498b9b5195040f949fc2d1910dc51b5e4c6bd27d833956e6d63ef
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains multiple heuristics indicating malicious redirector links. The document body, though heavily obfuscated, contains text suggesting it is a 'journal' and includes the primary malicious URL. The presence of numerous external PDF links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is https://ttraff.com/pify?keyword=jurnal+tentang+ekstrak+belimbing+wuluh+pdf, which is likely used to redirect users to a phishing page or download further malware.

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.com/pify?keyword=jurnal+tentang+ekstrak+belimbing+wuluh+pdf In PDF document text
    • http://files.jtainnovations.com/uploads/1/3/2/6/132680808/voloxodolobakuwuv.pdfIn PDF document text
    • http://files.evge.us/uploads/1/3/0/9/130969873/9878695.pdfIn PDF document text
    • http://files.usfproject-benitez.com/uploads/1/3/0/7/130738955/5944962.pdfIn PDF document text
    • http://vasijo.timesofmineralpoint.org/uploads/1/3/1/4/131452883/5457748.pdfIn PDF document text
    • http://files.jjesmerarchitecture.com/uploads/1/3/1/8/131871740/b927d6f.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/1/0431/9058/3464/files/modaporubewibodoxura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/funivajujosowonenokopewuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/wafonudod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9254/1589/files/nelefekukizoruranofugatad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9652/files/39091765427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/fixosunigokidusovuneri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6231/9521/files/bowflex_xtreme_2_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/89985110032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/14287817753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/83111049298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7258/5881/files/jspdf_autotable_header_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/mejizovedavaduvokovufumu.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000752a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752A 5740 bytes
SHA-256: cef5d729c78c25dd3e665cf81d2c937e1720d322aa3bba0c7c99bd3e4edb67b3
font_01_sfnt_off00008896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8896 10032 bytes
SHA-256: 3500df36451a2916ca72ac2d8396b33ff3168c8c8cd6b881973b378058a3ba35