Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b81d0340d0d16f…

MALICIOUS

PDF

46.5 KB Created: 2020-08-26 22:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 516b0c4f39c07701bc9c4eae34a13b2f SHA-1: 31c33d7ec9326a2ea3819a2accdf4e14e90d91b0 SHA-256: 97b81d0340d0d16f9557e3d2ea1783850d6dac4012fefebbe3cc061dbeaf4ca0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=motorola+apx+6500+manual'. This indicates a phishing attempt disguised as a manual. The document body, though partially corrupted, contains the same keyword, reinforcing the lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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.cc/pify?keyword=motorola+apx+6500+manual
    • http://files.randygreermusic.com/uploads/1/3/0/8/130813827/7912047.pdf
    • http://files.robertsapolskyrocks.com/uploads/1/3/1/4/131437087/kawaluxu-zamopewebejuxo-kisig.pdf
    • http://files.ibctoledo.org/uploads/1/3/0/7/130776046/e68b12774.pdf
    • http://files.bundledupjoycreations.com/uploads/1/3/0/8/130874278/884578b7.pdf
    • http://files.reflexgames.info/uploads/1/3/2/6/132682684/zesis.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/41818066723.pdf
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/24129467828.pdf
    • https://cdn.shopify.com/s/files/1/0432/1837/0728/files/vupemoziparibukuzafonezoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/48632268383.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4650/files/85984716933.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/29823806864.pdf
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/46290970719.pdf
    • https://cdn.shopify.com/s/files/1/0449/3662/6331/files/aptitude_test_questions_and_answers_for_interview.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/3780759590.pdf
    • https://cdn.shopify.com/s/files/1/0434/4292/9821/files/64668844297.pdf
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/kevuwipozolelifozoragawi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5890/files/albinoni_adagio_organ.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_off000061d1.bin
2952494e4115f7dcee61ff603d8a26b601e86d6ec763b386378c0e730f27fe2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x61D1 4996 bytes
font_01_sfnt_off000072b6.bin
c09d93707384e59237cf8d2718d9da8771cae27d40b563ecec0cf9d8b7cbb7c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x72B6 14124 bytes
font_02_sfnt_off00009f4a.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4A 4324 bytes