Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2476e3a33b3f19…

MALICIOUS

PDF

46.3 KB Created: 2020-08-09 01:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 219375562b7a1350041caa5fff18aa97 SHA-1: edd325ac05e35c058eaf2b8f2af0781402fac7f5 SHA-256: 5f2476e3a33b3f1920259d9e3e6dafa17d97f705e7c63b3385cd8571b8dea89b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. This indicates a phishing or scam attempt, likely using the 'free download' lure as seen in the document body and heuristic firings. 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.ru/pify?keyword=terjemahan+kitab+barzanji+pdf In PDF document text
    • http://biguput.equestequinefirstaid.com/uploads/1/3/0/8/130874478/4526067.pdfIn PDF document text
    • http://files.countertruth.com/uploads/1/3/2/7/132740458/xefudokavisam-fofanovalobin-borinidiposix-jojovigez.pdfIn PDF document text
    • http://files.lifeoflongearion.com/uploads/1/3/2/7/132711954/vudopifibetebim-xogadila.pdfIn PDF document text
    • http://files.abigailcrscott.com/uploads/1/3/1/8/131857270/7128790.pdfIn PDF document text
    • http://files.articulatetree.com/uploads/1/3/1/4/131453560/3299548.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/1/0437/0972/6888/files/wukigidonekiwatofug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/68818845941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/79132623268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/arquitectura_barroca_en_inglaterra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/1386664240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/tuwiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/dozamevutegokunosusezizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/icy_basalt_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/wixaloro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/93013987522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2609/6036/files/26908945574.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000082af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x82AF 22516 bytes
SHA-256: cd2ac1115980db594362ca086a208f05ba9bb90e311da14faeceec06de244184
font_00_sfnt_off00005260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5260 5348 bytes
SHA-256: 15f43a88ab83f802d11eed3d9fbf873659e2ddb7012290280a77ab64cd6b39fc
font_01_sfnt_off0000646a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 8944 bytes
SHA-256: a0b95cdbb5673936dacd613d48742aa0be1d1fa4d0f1a33578a389eac59c86c5

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