Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ba8f7a4e641f99…

MALICIOUS

PDF

36.0 KB Created: 2020-08-25 01:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cca43786ad438935dd7b808d301cf40 SHA-1: 66304b0fae8f4c58aad3084b7a98ef1a1b635b0a SHA-256: 84ba8f7a4e641f999efa97c2730df5dd48bda36e06c7ead128ff9a5c86e6f46a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector hosted at 'ttraff.com', which is flagged as malicious. This suggests the document is designed to lure users into clicking the link, likely as part of a phishing or malware distribution scheme. The presence of numerous other links to Shopify-hosted PDFs indicates a potential link farm or SEO poisoning tactic to increase visibility. No scripts were extracted from this sample.

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=faber+castell+malaysia+annual+report
    • http://files.hopelee.ca/uploads/1/3/1/3/131383318/xixitosabowazor_nezigugak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9629/4051/files/31159564566.pdf
    • https://cdn.shopify.com/s/files/1/0428/4225/9612/files/84990869880.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/fonovezajigen.pdf
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/uniden_dect_6._0_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/mibejujalitotelivagova.pdf
    • https://cdn.shopify.com/s/files/1/0463/6839/1329/files/besotaronilobuzazawexo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/greenland_ice_sheet_2050.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/feb_2020_calendar_kalnirnay.pdf
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/tipos_de_riscos_ambientais.pdf
    • https://cdn.shopify.com/s/files/1/0437/1175/8491/files/35837019271.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e0f.bin
f61037716577fdf25c31e9c3f41abf4b3e5b6c473695ea3ea8ee5c6be0d7b70c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0F 5276 bytes
font_01_sfnt_off00005fee.bin
1ef42c60324537465a9416aca5e0c2704e16f1587e9b6f3a0f6ff699cd2e5966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEE 10456 bytes

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