Malicious PDF — malware analysis report

Static analysis result for SHA-256 35150c81de6fc294…

MALICIOUS

PDF

40.9 KB Created: 2020-08-18 15:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7fcb1fe9856e3b179454e3649458cea SHA-1: fb85ba1d214ab6a7193243bfe348eae16ad06d4f SHA-256: 35150c81de6fc29406f710a5e627b5185cd4df7a0a8797af04d81e0ca4d89c08
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a "self certification form hsbc". The PDF also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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=self+certification+form+hsbc In PDF document text
    • http://rewutu.citybeerruns.com/uploads/1/3/1/3/131380265/9327406.pdfIn PDF document text
    • http://files.mindfulvisionaries.com/uploads/1/3/1/1/131163834/tujopufuzi.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/1/0435/4660/7765/files/que_es_un_brote_psicotico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/20414167444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/vajafexofawixavib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1142/files/nuvaxazamogapumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6655/5549/files/queen_size_quilt_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/8817/9353/files/ansys_maxwell_3d_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6187/0743/files/zujakozulufudakisejuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5953/files/53781496369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/surozoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/oxidation_of_primary_alcohols_to_carboxylic_acids.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_off0000633b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633B 5364 bytes
SHA-256: f61f6f0ff7b122f149a6185f66b774bfff79f4d15bb48b93f7561bb28f0853d3
font_01_sfnt_off0000753f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753F 10012 bytes
SHA-256: f8ad2369144e97da043908fc687d2a7e1f2d402bfb89e898c31403f316515ebc

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