Malicious PDF — malware analysis report

Static analysis result for SHA-256 55cdc4205627bc2a…

MALICIOUS

PDF

41.3 KB Created: 2020-08-03 09:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 352a5c1bee5a1920a7c534d7787eda63 SHA-1: 8427e937914d0c5076064c02d5b91a9197da148c SHA-256: 55cdc4205627bc2abf945ee23007aa68f23f07ab9ef6f5da400a66a59d4a93d1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=gem+car+troubleshooting+manual', which is also listed as a malicious redirector. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly benign links.

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=gem+car+troubleshooting+manual In PDF document text
    • http://files.dykewhistle.com/uploads/1/3/1/3/131380354/newedebeduja-davuvema-gefade-zenugasif.pdfIn PDF document text
    • http://files.timdewittphotography.com/uploads/1/3/0/7/130738956/kavim_filowesiwivuve_lozamuvodim.pdfIn PDF document text
    • http://files.ogologo.ca/uploads/1/3/1/3/131398385/nunagikaf.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/1/0433/0687/7080/files/26433336276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/16474587011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/botogapar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/32020115315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0762/2817/files/38880834477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/kapewawere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/lerefepax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/mimugumalesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/31206832841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1165/3282/files/20730511245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4640/2198/files/tuwojusasoxawudomaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/zefogaxujaxumiwadutan.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_off0000611a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611A 5384 bytes
SHA-256: 5b407468c5853021702a515060674791300ee51483f24cc929aa63f565dd7e1d
font_01_sfnt_off00007341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7341 10996 bytes
SHA-256: dd50b9392f534a266ab3bfd82e93f62dfbc98255d4e9acf997f1243b3d7286c6

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