Malicious PDF — malware analysis report

Static analysis result for SHA-256 9790b39d3e9c6e69…

MALICIOUS

PDF

40.1 KB Created: 2020-08-21 04:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 762808bafb70cc4e4910d8db92c41e8f SHA-1: 54db9c58b34076d33943e24dc7140fac22150684 SHA-256: 9790b39d3e9c6e69b9e79f5e1854b213de4e6e7a24a328b50d696dcc15620fda
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=choir+music+sheet+pdf'. This indicates an attempt to lure the user to a malicious site. The document also contains a large number of embedded links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the presence of the redirector and link farm strongly suggests a phishing or social engineering attack.

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.cc/pify?keyword=choir+music+sheet+pdf In PDF document text
    • http://fimikax.another-bright-idea.com/uploads/1/3/1/4/131452958/dekuseve.pdfIn PDF document text
    • http://files.interiorsbydabas.com/uploads/1/3/0/7/130776200/f607c8259.pdfIn PDF document text
    • http://jafux.tilburgmun.com/uploads/1/3/1/4/131437535/7b92a2.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/1/0431/5804/4827/files/50352766627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/tew_2016_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/circle_geometry_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6863/files/dragon_ball_z_android_saga_watch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/peruzerurim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/manual_and_automation_testing_courses_in_hyderabad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3233/6792/files/dart_tutorial_for_flutter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/defifixogatisugizupazudok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/73079626307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6381/2004/files/manejo_de_angina_de_pecho.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7617/2441/files/broadening_of_spectral_lines.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 2

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_off00005f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F57 5056 bytes
SHA-256: 375538afc0458944e1ae5754665da19afc0a562fde5af77963d1f8a04913524d
font_01_sfnt_off00007068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7068 10784 bytes
SHA-256: 778dfe2db45d76b12ef1767d6d47206c9a56dc8c2113e43a9f00e136113f3b11

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