Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd1b7c418cf28ac…

MALICIOUS

PDF

33.9 KB Created: 2020-08-12 19:39:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f8be4f2b03f0e0a7933951a04e705e0 SHA-1: 598c29c10dca4f480d413a20312d348711700787 SHA-256: 6cd1b7c418cf28accfce5c788992a3f5d679f593ee84b45f209ad32b59d2fd96
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=bugsy+malone+song+lyrics+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary intent appears to be directing users to malicious content via the ttraff.com redirector.

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.com/pify?keyword=bugsy+malone+song+lyrics+pdf
    • http://files.casadedios.us/uploads/1/3/1/3/131383892/7847281.pdf
    • http://files.ujelicarecentre.com/uploads/1/3/0/8/130813747/pijowutazit.pdf
    • http://japizato.pricelessstoriesphotography.com/uploads/1/3/2/8/132814975/sovizutediraz.pdf
    • http://birefage.ayapromo.com/uploads/1/3/1/1/131163930/tiriro_zafirev.pdf
    • http://files.drleifrosenberger.com/uploads/1/3/1/4/131454345/nitetelenav_xipekijobexotuz_pufila.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/suwasuxaraziluxapelotowe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9094/2888/files/76753791934.pdf
    • https://cdn.shopify.com/s/files/1/0428/3881/8982/files/69338681253.pdf
    • https://cdn.shopify.com/s/files/1/0430/5249/9095/files/arabic_french_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/73084348365.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/phpstorm_license_server.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/john_deere_sabre_14._5_38_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2780/7911/files/tozadadifuxater.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8829/files/faliliv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2089/files/microeconomics_colander.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_off000045fc.bin
cabe681f6f10f21514484421381afdeee5a8890cb713b2681d921425289a7565		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45FC 5624 bytes
font_01_sfnt_off00005905.bin
398823c448d2d0b7db60d2a84c5b52cec207f3c0e90c010cb969bf624ad46821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5905 9872 bytes

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