Malicious PDF — malware analysis report

Static analysis result for SHA-256 a558e062c9e9b0bb…

MALICIOUS

PDF

55.1 KB Created: 2020-08-17 11:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 596e0292612e3f395773107b56868d0f SHA-1: ff484cabf1485440cb86bb41a3aa12ff1d22bf52 SHA-256: a558e062c9e9b0bb23426d9f8ebed9968827c8c74f2f3914eb42ed39125522d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is presented within the document body, disguised as a strategy guide. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious URL is likely intended to lure the user into downloading further malware or visiting a phishing site.

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=europa+universalis+4+castile+strategy+guide In PDF document text
    • http://files.southcliffcommunitygroup.com/uploads/1/3/1/4/131483386/1079273.pdfIn PDF document text
    • http://files.gameart2d.com/uploads/1/3/2/6/132682990/210398905d.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/1/0435/2330/9727/files/fimiwajodiwazotugajowore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/72265961498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2412/0997/files/kivukekuxogozabironupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9226/3583/files/29645860650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0832/6812/files/the_reader_by_bernhard_schlink.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/36164885579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7724/5859/files/selanadodejidabulavoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/27596196521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2867/1646/files/contrato_de_confidencialidad_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/amazon_kindle_cloud_reader_to.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: regenbiopharmainc.com 3 samples

Related samples 6

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_off00008bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF5 5332 bytes
SHA-256: 23ea94ea15e21d729f934ef4e011652e9d057dfaa965919dd94f3df796ec4256
font_01_sfnt_off00009e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3B 10272 bytes
SHA-256: 8d4c11ae193de5844968777a52319d681040bbeb3c610313caa404445e7d60e0
font_02_sfnt_off0000c147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC147 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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