Malicious PDF — malware analysis report

Static analysis result for SHA-256 68366141711565ff…

MALICIOUS

PDF

54.4 KB Created: 2020-08-17 13:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e11dc5caea790a429305e781114b0939 SHA-1: 4b1f6329226cfa4d2eafd0aba7001fcaf54029a8 SHA-256: 68366141711565ffb455848c607992abb3ffc8c8b0b57ea79248f0274d5e1122
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, indicating an attempt to distribute malicious content or phish users. The primary malicious URL identified is https://ttraff.ru/pify?keyword=free+sheet+music+for+guitar+chords, which is presented as a lure for free sheet music. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or redirection 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.ru/pify?keyword=free+sheet+music+for+guitar+chords In PDF document text
    • http://files.corneliusmullerproductions.com/uploads/1/3/1/1/131164475/polati.pdfIn PDF document text
    • http://files.the-joy-of-syntax.com/uploads/1/3/1/4/131453620/rivavopo-wudigevo.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/1/0430/9663/7597/files/manual_autocad_2020_espaol_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/how_to_delete_all_emails_on_gmail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/gogegizenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3725/3023/files/a_level_physics_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/zedozozonarimifefimimope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2191/7598/files/10512795953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/jalujamirarulipixusuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/87470271659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/brugmansia_candida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/bacteria_transformation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/25547567939.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_off00008a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A63 5356 bytes
SHA-256: cfa4c3e565e3c98ad030bc8b33c6785f6517c5eed3a6829f9b36a9bcebe062c2
font_01_sfnt_off00009c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C78 15544 bytes
SHA-256: 2582b5c917e6b284cd0f874900186ebeede57854ddb859c8e85613d8f6b3ba9b

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