Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab03fa899c875e2…

MALICIOUS

PDF

40.8 KB Created: 2020-08-03 05:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e10b1099f32b246919ec412cd7c7528 SHA-1: 7dd4c01d3a2a00cbd99726b4ec823f684078d429 SHA-256: 6ab03fa899c875e2481b99401340fec4c8c2973d21a9f62ed8f01470002605b7
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'Gotham font free' download, which likely leads to the malicious URL. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed for malicious redirection.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=gotham+font+free
    • http://files.slansing.org/uploads/1/3/0/7/130738636/lupukibupebuwet_rujaziwevelamos_pagaroro_faratujafowajer.pdf
    • http://files.aquaelementeliquid.com/uploads/1/3/2/7/132712214/vojemubabo-givisawalo.pdf
    • http://files.alidwyerofficial.com/uploads/1/3/0/8/130874204/zoxozikabol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/tonom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0746/files/komemin.pdf
    • https://cdn.shopify.com/s/files/1/0430/6151/0293/files/46885538365.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/duguneximefuko.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/netizogetoxol.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9777/files/ligupaxipoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/legasuvil.pdf
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/jotabipazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/80743589422.pdf
    • https://cdn.shopify.com/s/files/1/0434/0187/1512/files/gidekopafexapotomenunis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/168803633.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_off000064bb.bin
860b0676ab55d9cf3154f6b24f11f006b7a2ee2a7884f89e24218f2a2303dc1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 4828 bytes
font_01_sfnt_off000074fb.bin
bdd6a610e572fb3449dc89b0b4527c93416f6429a1cc1840beaec6a87f99dfac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FB 9836 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.