Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25dcdff10b327e0…

MALICIOUS

PDF

47.8 KB Created: 2020-08-22 21:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80096fed5d9be9d57eb68f289f502ef2 SHA-1: 59afae1a83dc40fb9f4039bfb78e0ccdb5bdb93b SHA-256: c25dcdff10b327e020b1fdc13bf3b9aba55de31a2455ff3df1cbb153246278a0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF file was flagged for containing a mass of external links, a common tactic for SEO poisoning or link farming. One of these links, 'https://ttraff.com/pify?keyword=angular+formarray+get+formgroup', is identified as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary malicious component. The file's purpose is likely to redirect users to malicious sites through this link farm.

Heuristics 3

  • 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.
  • 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=angular+formarray+get+formgroup
    • http://ridifir.loveadelyn.com/uploads/1/3/0/9/130969525/5402300.pdf
    • http://files.unleashedlure.com/uploads/1/3/1/1/131164174/977232.pdf
    • https://cdn.shopify.com/s/files/1/0428/6211/7030/files/80466057670.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/dokepijiro.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2518/files/65302446593.pdf
    • https://cdn.shopify.com/s/files/1/0437/5946/8701/files/sports_day_in_school_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1869/files/bovomaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/john_blanchard_ultimate_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/ark_best_thatch_dino.pdf
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/52672453591.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/14642023532.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a2a.bin
fabf95c8273850e97645c9095e6596b4fe67bc03289ee1ccd94cd381aa370ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2A 5136 bytes
font_01_sfnt_off00006b99.bin
e2c5feb61983db5c38289acd9f2e8e94a2f883fe384fa135ebeba57e518996ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B99 15504 bytes
font_02_sfnt_off00009c8b.bin
02054a2a471ad0c7bb60aacb4c3b0964115d6017a8d847ad6a08a272d7363b75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C8B 16440 bytes

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