Malicious PDF — malware analysis report

Static analysis result for SHA-256 319540e0b30ebe82…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 10:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 485f18ef26477b79506047e449526031 SHA-1: 009dae4a9213b25a055ede6e3c6b0971e505e709 SHA-256: 319540e0b30ebe8235d97eba61dd618318b74a9bb47a0d27f55daaab0cabd653
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that the document is designed to lure users to external sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=katuni+video+mp4.

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=katuni+video+mp4 In PDF document text
    • http://totixaxek.advancedemergencytraining.com/uploads/1/3/2/6/132681351/5565843.pdfIn PDF document text
    • http://mimoseb.indytimes.us/uploads/1/3/0/7/130738721/8823732.pdfIn PDF document text
    • http://files.ithembafsc.org/uploads/1/3/0/9/130969435/metali-mexamezivomu-baxekasorezoto-raluwitisi.pdfIn PDF document text
    • http://tizusi.thinknwonder.org/uploads/1/3/1/3/131380065/fidimepovidominoni.pdfIn PDF document text
    • http://dufane.columsands.com/uploads/1/3/1/1/131163992/aa57e41b1a7ab.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/1/0428/2191/0687/files/52357992940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/89198703822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9924/3174/files/duwasuxafapilubadad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3925/0853/files/tonipopagigogonuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5066/2053/files/rock_slope_stability_analysis_giani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/keruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/juwulolotuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/xanuduzosivixavosisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/zoviteren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/rerovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7525/3910/files/pukizutuxap.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_off00006481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 4916 bytes
SHA-256: 234b2c323fecf807a5dc83f695c35043b787080dd797ff3d4c3f202ec61daba7
font_01_sfnt_off0000753d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753D 10156 bytes
SHA-256: a9dc4d407bf1bb3d9a4da6361b7b0d47aecd1e7e126f4f5fb2fa3db28c9e4c5d

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