Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccd39f06d40106e…

MALICIOUS

PDF

32.9 KB Created: 2020-08-17 08:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 750bb85c12c7a1c9c56d9655b74df6d7 SHA-1: f37c0ad4c0718ae02d697202c7397548be86de05 SHA-256: 6ccd39f06d40106ec8a5386b8bd4dfcf9eba2ad4f0282103a72af36376ab549a
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=cold+chisel+bow+river+sheet+music'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary attack pattern involves tricking the user into clicking the malicious redirector link, likely leading to a further stage of infection.

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=cold+chisel+bow+river+sheet+music In PDF document text
    • http://files.audreylewisinteriors.com/uploads/1/3/0/7/130738836/2116453.pdfIn PDF document text
    • http://tafiraru.waitingwithyou.com/uploads/1/3/0/9/130969060/befdcd21d.pdfIn PDF document text
    • http://files.milwaukeephotobooth.net/uploads/1/3/1/8/131871419/700e32a98a8.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/1/0437/1460/9305/files/clinician_administered_ptsd_scale_caps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/lukonotojoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/bank_note_press_dewas_question_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2574/3521/files/69820561847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/crazy_train_solo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/degitusaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6156/5850/files/american_history_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/47313823226.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 5

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_off000043d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43D1 5164 bytes
SHA-256: 54d6e55dd7267ad6c437981a858877911acb80ae7f931abbce5428ffc55f0599
font_01_sfnt_off00005551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5551 9828 bytes
SHA-256: 8b2e7ec68202d7c7e348f0547155669f5389524e1eba710b42893bde46813a68

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