Malicious PDF — malware analysis report

Static analysis result for SHA-256 314013f788cfa0f5…

MALICIOUS

PDF

38.7 KB Created: 2020-08-05 03:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0335c3e1ffc68c2e812fe076796e7b4 SHA-1: eedd739335b8978672b7f1807ce138942fb5ebba SHA-256: 314013f788cfa0f5c8fe7b3e159ba98ca14c63d9df7147b5c0c4ca87c87130cd
140 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text fragments and URLs that align with a phishing or scam attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bemonc+2020+pdf, which is likely used to redirect the user to a malicious site. The presence of many Shopify-hosted PDF links suggests a link farm or SEO poisoning tactic.

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=bemonc+2020+pdf
    • http://files.xiaoyanglong.com/uploads/1/3/1/4/131438460/fodolebasox_wagipajoges.pdf
    • http://files.ottertotsplayandlearn.com/uploads/1/3/1/4/131454272/a52f4f79547fb.pdf
    • http://files.drgobleconsulting.com/uploads/1/3/2/6/132681992/kokumure.pdf
    • http://files.vicenzas-crostoli.com/uploads/1/3/1/4/131483253/9062675.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/gas_food_lodging.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/60471049354.pdf
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/tazamipibotewomamudoji.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/88755902239.pdf
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/aptransco_syllabus_for_eee.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/61589312769.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/amelia_jane_again.pdf
    • https://cdn.shopify.com/s/files/1/0437/0799/0169/files/fibufoxe.pdf
    • https://cdn.shopify.com/s/files/1/0448/3494/7233/files/asu_uniform_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/taromesikajekugad.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/98088943330.pdf
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/lonimukobapekutalibagit.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/51884018290.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_off00005b62.bin
bf3a5555980e401ae705a4d79d08e1c3c1d93892425e11294e0fc5d57cbe3041
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B62 5108 bytes
font_01_sfnt_off00006cc2.bin
0c31291edb3fe4521d85b23eb075998f7770ccb8923fa5b57806a8961764de13
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC2 9736 bytes