Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c96b8765d0617e7…

MALICIOUS

PDF

51.4 KB Created: 2020-08-19 15:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc46071cc4a884e3ce55e69a3d5beca7 SHA-1: 0e22b11e92d4c08c6771279c5b82884c9f1b397e SHA-256: 2c96b8765d0617e7a929b993e5e8b93e5f59967a607a71006764270b369e87c8
214 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, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL and a reference to a piano sheet music PDF, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=everything+at+once+piano+sheet+music+pdf In PDF document text
    • http://files.marketmovesmatt.com/uploads/1/3/0/8/130874629/nuvigure-bufagejiv.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/1/0430/1763/3945/files/city_of_arvada_co_sales_tax_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/roletejipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/tivoxivotuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7802/9213/files/45529118659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8095/7598/files/57470614003.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/definition_of_cost_accounting_by_different_authors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5376/0160/files/jajabonagapuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/solija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/20493942181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/attestation_de_fin_de_stage_en_entreprise.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_off00007504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7504 5656 bytes
SHA-256: fc424d102643c5d159cde677ae9225bf73fb9c8420bdfea034a99f3573848f5d
font_01_sfnt_off00008827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8827 10308 bytes
SHA-256: 3233cac1e302e1259d8772b2ae0c22a4c20d478ccad42c33382b4f80314f682b
font_02_sfnt_off0000aba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA8 16100 bytes
SHA-256: d973db94ba2c448c661c26f08d051ac794e7cb4f3c7daa33c2141e8036f071b6

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