Malicious PDF — malware analysis report

Static analysis result for SHA-256 537a55edb4551f31…

MALICIOUS

PDF

59.4 KB Created: 2020-07-28 23:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0a421e18742495521dc1aa866849680 SHA-1: 519727e7bf530e0846757a55587b1e8adb232b33 SHA-256: 537a55edb4551f31b38c2c524241bad602a39bb95647dc083e84c65f58886f9d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Tamilrockers.cc 2019 movies', suggesting a lure to pirated content, which is a common phishing or malware distribution tactic.

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=tamilrockers.+cc+2019+movies In PDF document text
    • http://files.neksscottishrite.com/uploads/1/3/0/7/130775432/tasobogadedidul.pdfIn PDF document text
    • http://files.susanwattgrade.com/uploads/1/3/2/6/132695746/pofamulaker-mowanejogavo-vimelavubam.pdfIn PDF document text
    • http://files.jamesmatthewwilson.com/uploads/1/3/1/6/131637057/d1e23bb.pdfIn PDF document text
    • http://files.lizzdunich.com/uploads/1/3/1/1/131164153/5011388.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/1/0437/7152/7325/files/wukuwedon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/kelamudoruradonilibafanag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/wesexekoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/10799665689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64238793182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/jawetarodatubeliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/wiwetirurezuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/kobudox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/58136805360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/65020069451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/falirul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/81397334527.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 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_off00009a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A2C 5132 bytes
SHA-256: d85dc55e5faf033150e613f9e9c8a438e19079d1c6bdf51cce53cda73c47ed6c
font_01_sfnt_off0000ab91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB91 1936 bytes
SHA-256: 19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f
font_02_sfnt_off0000b4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D7 13244 bytes
SHA-256: ee89d02d709aa7621cb9592f7d86c24c18584e53a078b454c10be73f3a6c8db1

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