Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebc02a3d9874b0f…

MALICIOUS

PDF

46.3 KB Created: 2020-08-13 03:16:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b583ec3acea29bd15580d067572f8fed SHA-1: 535ce2b07323a46bff364790bccc269f269218f5 SHA-256: cebc02a3d9874b0f5d14d0262e4724b7bb1fd6853ddce53bdda765e407a97a95
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but the primary link redirects to a known malicious infrastructure at ttraff.ru. The document body, though partially corrupted, contains the same keyword as the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly supports the malicious nature of this PDF.

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=aikido+techniques+for+beginners+pdf In PDF document text
    • http://files.chtechlab.com/uploads/1/3/2/7/132740693/navobulevavi_nisuwenonam_wusijalanew.pdfIn PDF document text
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdfIn PDF document text
    • http://bolekugev.paulaingeneva.com/uploads/1/3/0/7/130775075/6773352.pdfIn PDF document text
    • http://gelej.healinghandofgrief.com/uploads/1/3/1/4/131453150/sisedaxozoma.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/1/0429/1769/1559/files/69983795497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2113/1161/files/25373704139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5153/6799/files/bayada_bucks_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/pogonagakix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3214/2243/files/58735661390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/juwufemomide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/cnc_turning_programming_fanuc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/14460434128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/dagavinodutedinokoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/7384712126.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 8

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_off00007673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7673 5492 bytes
SHA-256: 4649712b6cce898a79372b1206b6c3653b2ab59f96167a4ec800ced27b66184a
font_01_sfnt_off0000890c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890C 10448 bytes
SHA-256: ff5244f9e1d58924680707ef4c14f102499b36eb6a9ce682e6dbfafd9c57073f

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