Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc637b7181ca2662…

MALICIOUS

PDF

43.1 KB Created: 2020-08-02 18:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35f1027b97997f1855e53a2d3a836ff2 SHA-1: a92ed73fbc123cff0b494ec151984630a5c6b3d8 SHA-256: fc637b7181ca26629594d19539ec02eca05105eff5e3740dda513619d53ac86c
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a Google Play Music export tool. The document also features a large number of external links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or distributing malicious content. The ML classifier strongly supports the malicious verdict.

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=google+play+music+export In PDF document text
    • http://files.ignitetheapple.com/uploads/1/3/0/8/130813846/fozir-worusurezek-musefi-giwomusaz.pdfIn PDF document text
    • http://files.jesta-designs.com/uploads/1/3/1/8/131856365/3070610.pdfIn PDF document text
    • http://files.alabamaassure.com/uploads/1/3/2/3/132303286/kovefif.pdfIn PDF document text
    • http://files.richmondhouseclay.com/uploads/1/3/1/0/131071063/7515727.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/1/0433/0687/7080/files/borutazaweluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/ruworutuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/17538084794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3066/7673/files/68070168954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/saints_row_4_cheats_codes_xbox_360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulexukiwogefera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/vowuselowekujogudos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/78263822350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/deniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/31903254008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/nukosegodumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopesutokuvikoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/touchtunes_jukebox_hack.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 4

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_off00006a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A56 5456 bytes
SHA-256: b48400b55bab57f0279d4b3a272142b689c5df7e7aba8d831b921ac4a5b4473d
font_01_sfnt_off00007ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE7 10128 bytes
SHA-256: c22e9256840c5b1344815aa497ac45a10599d7860beabdc57a2f17e04b08b0ba

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