Malicious PDF — malware analysis report

Static analysis result for SHA-256 374d087fdf00f9d6…

MALICIOUS

PDF

47.8 KB Created: 2020-08-04 02:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3420ef0f6e5737449e9cb8849e1bb3eb SHA-1: 1e8dcdbb60f70d552631d53a70411e911dfa35fc SHA-256: 374d087fdf00f9d67e2d24e3ce619afb3c4b4a96eddc9ebf553a38b7965ecbac
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to a redirector service (ttraff.cc) which is known to host malicious content. The document body, though partially corrupted, also contains the same redirector URL, suggesting it is the primary lure. The presence of numerous links, many with SEO-like slugs, indicates a link farm designed to distribute malicious payloads or lead users to phishing sites.

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.cc/pify?keyword=status+asthmaticus+pdf+download In PDF document text
    • http://files.hermionemerry.com/uploads/1/3/1/8/131856034/wozoruzo.pdfIn PDF document text
    • http://files.lakesuperiorsdragonsnest.com/uploads/1/3/1/3/131383743/fasolagexalumizen.pdfIn PDF document text
    • http://files.luciadisanto.com/uploads/1/3/0/9/130969166/585afea36.pdfIn PDF document text
    • http://files.finaldraftwriting.com/uploads/1/3/1/8/131856844/2372936.pdfIn PDF document text
    • http://files.redroostergrill.com/uploads/1/3/1/4/131406762/59e6a4578591d.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/1/0432/7240/5157/files/gololawaxitebutopexare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3583/6072/files/javom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/viragumibowegerom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/waresudogenufeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/24351156285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/jefobenupatuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/razug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/67001390605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/fubilol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3272/1046/files/backgammon_rules_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1297/9869/files/saworifozoruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/vewamamavosu.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_off00007c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C72 5496 bytes
SHA-256: eb5afb389b3d333d3bef589bbe9af53fb54011d9159f1983824c56c4adb6cb3b
font_01_sfnt_off00008f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F19 10196 bytes
SHA-256: f8927d5e1da832c5435d7803568630efd94caff0099df41f4cf4973a3132dd1e

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