Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db990adcb849b34…

MALICIOUS

PDF

41.1 KB Created: 2020-08-09 18:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6cd9c01516ff85d8154eca2f1ccd3d9e SHA-1: 763fb04dcba4ad7e51b6202832abc303fc362678 SHA-256: 5db990adcb849b345d660be2abe2413d5a28ce8cc85b18ee01eac2014001f167
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 identified as malicious. The document body and embedded link structures suggest a lure for free downloads, which is a common phishing tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=white+christmas+chords+pdf, which is used in conjunction with a link farm strategy to distribute malicious content.

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=white+christmas+chords+pdf In PDF document text
    • http://kojezopa.jorusin.com/uploads/1/3/0/7/130739024/82ec82ac66.pdfIn PDF document text
    • http://files.audrey4care.org/uploads/1/3/2/6/132695651/dubezudemados.pdfIn PDF document text
    • http://files.pulse-studios.co.uk/uploads/1/3/0/7/130738984/vabofozisoronanibi.pdfIn PDF document text
    • http://files.destyinvestments.com/uploads/1/3/2/6/132683087/5983337.pdfIn PDF document text
    • http://files.quintemozartfestival.ca/uploads/1/3/1/3/131398143/6162566.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/81189166072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/xinevojarixaxabojupebesod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/karaneweze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1057/9865/files/54998797381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5948/6626/files/how_to_write_motivation_letter_for_scholarship.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/69086176898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4334/0956/files/giluzujuvex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3726/8900/files/periodontologia_clinica_carranza_9_edicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/cfa_level_1_mock_exam_2014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/42292084400.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55BD 5060 bytes
SHA-256: fc6d303f66156ef650600f4ad51a36b5ba677976efb56d1d51ce3bf5068b84dd
font_01_sfnt_off000066f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F6 10008 bytes
SHA-256: 44fffe8a3bac3cc6505728de04f6eb281f19d5ee00d0daa3f6ac9125fc52a839
font_02_sfnt_off0000890e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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