Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ebd43444b879f10…

MALICIOUS

PDF

52.3 KB Created: 2020-08-23 00:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3662813517b81524c1eb22912b862164 SHA-1: e9d7c280fa45bba3e2244f4cdde67ec55307cbac SHA-256: 7ebd43444b879f107f35ce1e9132ab0dbf67ebfbe96f29a5ac1ff19dda49f13b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure for 'sheet music', which aligns with the heuristic findings of a link farm and SEO redirector. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

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.com/pify?keyword=let+it+go+piano+easy+sheet+music In PDF document text
    • http://files.anjoybaskets.ca/uploads/1/3/1/3/131383649/3120355.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/1/0432/3901/4562/files/87076581071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7257/0012/files/ansys_15_mechanical_apdl_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/wowisusutekowibevanufuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5448/1056/files/91044234570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/20434960700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/xumomipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/zafubowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3133/6859/files/dujewifixigibagopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/bhavans_college_merit_list_2020.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000782e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782E 5264 bytes
SHA-256: 02a4e2506c4ccc0587c4204ef4353c816ae982def8d48f9b751fe05fdff0ac3b
font_01_sfnt_off000089fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FB 10448 bytes
SHA-256: 633514446d56655549e2de2fe37a435ee76576add5419ce1b1fb0490bad529d4
font_02_sfnt_off0000ae0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE0F 16100 bytes
SHA-256: d973db94ba2c448c661c26f08d051ac794e7cb4f3c7daa33c2141e8036f071b6

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