Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c684581aed53db…

MALICIOUS

PDF

52.1 KB Created: 2020-08-21 03:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ad8379b29bfe9843ef7a810080bc45c SHA-1: d0ab730f9a12a73f702c73392cca2235a555a5c7 SHA-256: c8c684581aed53dbd7c3961a377836ceb7207eb753f80fc9d612c6467760f77e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for SEO-based phishing. The document body, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=the+greatest+show+sheet+music+piano+pdf', which is also flagged by heuristics as a malicious redirector. The presence of numerous external PDF links suggests an attempt to manipulate search engine results for malicious purposes.

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=the+greatest+show+sheet+music+piano+pdf In PDF document text
    • http://files.snarkypaws.com/uploads/1/3/0/7/130739348/0e45dc05eb01bb.pdfIn PDF document text
    • http://sirisojux.madisoncountycc.com/uploads/1/3/1/4/131437792/notowa.pdfIn PDF document text
    • http://files.edithshope.org/uploads/1/3/1/4/131437563/7668209.pdfIn PDF document text
    • http://napavobu.linemarking.ie/uploads/1/3/1/0/131070611/senukuwoj_motokozun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/24133747944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/muxorabuzafafubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/9022/2744/files/41996798836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1956/5216/files/classic_human_anatomy_valerie_winslow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7610/8956/files/20105839098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/0058/6398/files/letter_template_for_proof_of_residency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/56606689453.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEC 5460 bytes
SHA-256: a2082afe4385e8940da17dc8662450e2298ad976a44dd9273c04d82c95a8beb5
font_01_sfnt_off00007e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6B 9912 bytes
SHA-256: 83430b919ae84227d16f168263223d38bfea4cfddc1f93c0477561a5631a8b4a
font_02_sfnt_off0000a08f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA08F 16100 bytes
SHA-256: 84650fe671c70ac66f3af0994468c9b9feb42d01905b0f030d5781e095ef8e52
font_03_sfnt_off0000b55e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB55E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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