Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9bb412e4f74191…

MALICIOUS

PDF

46.2 KB Created: 2020-08-12 21:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a50708346c4f2bd7d2a57392159ea832 SHA-1: f78cc6e792af927625de38f9174ad6bb791b41f2 SHA-256: ae9bb412e4f741916ec7e893ab85f19006606591fd7b550061cd8ebd7fb9de5e
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bhushan+steel+nclt+pdf'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this. Additionally, the 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam pretext, aiming to trick the user into interacting further. The presence of a large number of external links ('PDF_SEO_LINK_FARM') further indicates a malicious intent to distribute content or redirect users to potentially harmful sites.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=bhushan+steel+nclt+pdf
    • http://dunofuso.garrylukemassage.com.au/uploads/1/3/0/8/130874050/pipogo.pdf
    • http://files.bluecruiseturkeytours.com/uploads/1/3/0/7/130776254/luvulepesurapij.pdf
    • http://files.redditchchessclub.org/uploads/1/3/0/9/130969645/d0aafffc03e.pdf
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/fudusekagolafupuzerox.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/how_to_download_a_vimeo_video.pdf
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/6257766025.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8069/files/exceptional_learners_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/pufin.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/8979282515.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/redemoluzomitetas.pdf
    • https://cdn.shopify.com/s/files/1/0435/1721/4874/files/sadutilixu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/sumakomolarulotanagolin.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/pomub.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/29470019188.pdf
    • https://cdn.shopify.com/s/files/1/0432/2046/7869/files/litepekow.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_off00006244.bin
99575c078fefff04130d81070408d0e2785f012d91fbef7cbe95f116913aa2ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x6244 5196 bytes
font_01_sfnt_off000073ec.bin
6735f85b5b221579ac1bfa74e1ede2d945b73009d726b523aa609ff94648509a
pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 10080 bytes
font_02_sfnt_off0000969a.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0x969A 16164 bytes