Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba676c7eb6cb25dd…

MALICIOUS

PDF

39.6 KB Created: 2020-08-08 02:03:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 599554c3b89cb349fae43051b09859d8 SHA-1: 73a6d5ccb8b01b76f154a2716486ddbbcc57a122 SHA-256: ba676c7eb6cb25dd5cc738d8273eaa25316ca54d7f56b80fd6b9691e071a78d1
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=nmk+police+bharti+2020+pdf'. This URL is likely used to redirect the user to a phishing page or to download a secondary payload. The document body, though heavily obfuscated, contains references to the same URL and other Shopify-hosted PDFs, suggesting a link farm or content delivery network for malicious files. The presence of multiple embedded URLs and the redirector link strongly indicate a phishing or malware distribution attempt.

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.ru/pify?keyword=nmk+police+bharti+2020+pdf
    • http://files.strictlyskillsbasketball.com/uploads/1/3/1/6/131636764/4217464.pdf
    • http://files.classyclothingcovers.com/uploads/1/3/1/4/131407796/583d6926fe981b.pdf
    • http://fafojasu.littlegabba.com/uploads/1/3/1/6/131607163/rapotumijod.pdf
    • http://files.carlosboix.com/uploads/1/3/0/7/130739155/6456701.pdf
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/zasusovadifigadubejejabim.pdf
    • https://cdn.shopify.com/s/files/1/0430/1147/3571/files/livizagibapoxes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
    • https://cdn.shopify.com/s/files/1/0437/0307/4971/files/11685474422.pdf
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/convert_large_to_word_document_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/66510446961.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/zabukujezodawepogukud.pdf
    • https://cdn.shopify.com/s/files/1/0435/6141/8913/files/semetizovut.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/zexipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/jipegotabujobugosudo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/life_insurance_exam_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/3001/0273/files/meaning_of_gayatri_mantra_in_telugu.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_off00005c54.bin
e2220703f50f81d53bbe8c90caf89307c02e950807459d18a59edc9b458a2883
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C54 5664 bytes
font_01_sfnt_off00006f70.bin
15e735233bcb3506c7a6da99d924e2607e3ecc42a1d9aeacea240ff4bb8c320d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F70 10012 bytes