Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c13dc2a06d47af…

MALICIOUS

PDF

43.4 KB Created: 2020-08-25 02:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d35ae6480d038568c2d7581336f1d94 SHA-1: bbea9c73186d0f4a45a6576046b9b6480c54e159 SHA-256: 98c13dc2a06d47af819ece5b13a503050f640d806144fbc3520f528652c04582
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector service, ttraff.ru, which likely serves to obfuscate the ultimate destination of the attack. Another heuristic indicates a PDF link farm, suggesting a large number of outbound links were generated, potentially for SEO manipulation or to host further malicious content. The document body contains garbled text but includes the redirector URL and several shopify.com URLs, some of which are confirmed benign, but others are unknown.

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=scatter+plot+google+sheets In PDF document text
    • http://files.purrbastetsphynxandbambinos.com/uploads/1/3/0/9/130969700/xolurelilowujoleki.pdfIn PDF document text
    • http://tadun.steelowltech.com/uploads/1/3/1/3/131383813/d602c371.pdfIn PDF document text
    • http://bamaruxa.marshamholistictherapy.co.uk/uploads/1/3/1/1/131164250/5702142.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/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4587/8950/files/sonekebalepoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/62241887032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/26148121893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5164/6119/files/eu4_condottieri_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/cape_chemistry_past_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/2702692751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/kalender_2020_rlp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/nexaramidolototajufure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4383/1458/files/fakur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6582/files/30617581545.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 2

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_off0000688d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688D 5300 bytes
SHA-256: 69e796933bb5f0c097744429f1f69bfaab8bb7ab75e63a96ca2a0832236a9008
font_01_sfnt_off00007a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A79 11596 bytes
SHA-256: bee663c5c92f3bab45e004a30cdddcca32dbf9b5c2d608d58e3998cb368bf66b

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