Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c754df640ce0f3b…

MALICIOUS

PDF

34.5 KB Created: 2020-08-27 20:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9da45a42de8ef499cc523eb3d8dc97f6 SHA-1: b8c38a0f0c3b05a7ffb714d7ace151c92370bb44 SHA-256: 0c754df640ce0f3b2f6c3b8993eca6af2311bbefb3424489e9169633ec0265c7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and heuristics indicate it contains a large number of external links, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=what+beautiful+name+it+is+chords', is known to lead to malicious redirector infrastructure. The document body contains garbled text and embedded URLs, further supporting a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=what+beautiful+name+it+is+chords
    • http://files.prettylittlerose.uk/uploads/1/3/1/3/131398386/waputil.pdf
    • http://files.kinderee.com/uploads/1/3/1/3/131398605/2826683.pdf
    • http://kuweginuj.stevenparrphotography.com/uploads/1/3/2/6/132681352/mefiwoloxot-bogilatejam-powiza.pdf
    • http://files.houseofbellator.com/uploads/1/3/0/8/130814227/deduzaxilusixom-vuxulatepojo.pdf
    • http://files.amyplanttherapy.com/uploads/1/3/1/3/131380730/1833963.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/38324156919.pdf
    • https://cdn.shopify.com/s/files/1/0457/8974/1222/files/carnet_fronterizo_venezuela_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/rulubuxikeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/1819/7912/files/wuzup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56773010908.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/96641554784.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0220/files/30951956197.pdf
    • https://cdn.shopify.com/s/files/1/0431/1639/6697/files/wipuduvorupukep.pdf
    • https://cdn.shopify.com/s/files/1/0464/5004/9192/files/37862182590.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/76803672237.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/95908742290.pdf
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/cherrypickers_guide_to_rare_die_varieties.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a7c.bin
20d919724ad6245e32d15f35c13ae3f44e08839d7b4717ba43c2178099639399		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7C 5416 bytes
font_01_sfnt_off00005cb9.bin
bd20f09e1693687a4785a7374614c20dd0106676555cc9942f52b45093d02f48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB9 9468 bytes

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