Malicious PDF — malware analysis report

Static analysis result for SHA-256 306b43017e7d2c5f…

MALICIOUS

PDF

34.7 KB Created: 2020-08-08 01:00:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0afad372f84cb6667f6b886686939e99 SHA-1: d5fb84c3d333d32a1a4345ff201d7761f7e64f78 SHA-256: 306b43017e7d2c5fc493b2efbe4954f35fd618139d031fc8aec9da7cba430894
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector infrastructure at `ttraff.com` which is known to host malicious content. The document body and embedded links suggest a lure to download a PDF, likely to deliver a secondary payload or phish for credentials. The ML classifier strongly supports the malicious verdict.

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=gloomhaven+rules+pdf+download In PDF document text
    • http://files.ethos-amcww.org/uploads/1/3/1/6/131606550/venawipudato.pdfIn PDF document text
    • http://files.drjustinsinclair.com/uploads/1/3/1/0/131070051/26634.pdfIn PDF document text
    • http://files.pdescape.org/uploads/1/3/0/8/130874432/861221.pdfIn PDF document text
    • http://files.ak4h.org/uploads/1/3/1/8/131857120/weguran_dolug_wonanonuxepupu_lanapizod.pdfIn PDF document text
    • http://tikerug.reiver.life/uploads/1/3/1/4/131483254/cc6058e0b0e0.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/1/0429/3866/3079/files/matiwijesizovenetivosavex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7527/2855/files/tipos_de_canales_de_comunicacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/algebraic_expressions_and_identities_class_8_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6357/2635/files/90789771431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5752/6437/files/rto_learning_licence_test_book_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4757/4943/files/zazige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/21824162204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6432/8345/files/cognitive_behavioral_therapy_judith_beck.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/22137894292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/85765975187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/sujelanarawabumopudurubid.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_off00004af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF1 5464 bytes
SHA-256: 6340da2387fadf0a073edca4c8aeb536c90f91f769e780b14f1932344acc48c7
font_01_sfnt_off00005d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D73 9456 bytes
SHA-256: ee1bcd37fa133a469f05ea54f936d95eebbaa206b78e8ddeb6495f4ece7737b7

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