Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3200b6256d68f4…

MALICIOUS

PDF

39.6 KB Created: 2020-08-15 22:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5450a0b6a6e474e33600429bddbc6257 SHA-1: bf93cd1e822399a40f84f4b90ea535f43c89361c SHA-256: 4e3200b6256d68f4d90ec01ed248608019be303d928a94ca3582b204bd41d1c2
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to deliver a secondary payload. The document also hosts a large number of other PDF files on Shopify domains, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. The embedded URLs and the PDF structure indicate a phishing or social engineering 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.com/wb?keyword=hybridation%20d
    • http://files.3ddd.me/uploads/1/3/1/4/131454791/5599763.pdf
    • http://files.junglingworks.com/uploads/1/3/1/3/131379820/lovigarasel.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/97966469735.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/30130583373.pdf
    • https://cdn.shopify.com/s/files/1/0450/5842/4995/files/nijugujigawilufu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2391/files/american_airlines_logo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/213420805.pdf
    • https://cdn.shopify.com/s/files/1/0430/8877/3269/files/wuwaremido.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/sinhala_adventure_story_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/44206640038.pdf
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/xamudugel.pdf
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/fingerprint_based_biometric_attendance_system_using_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/13846749966.pdf
    • https://cdn.shopify.com/s/files/1/0431/4438/0578/files/liranade.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0706/files/bobiz.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_off00005a26.bin
4db191be50916a34bfabb063e035c3fb3c5a8550b2ab6dc5469bfe3919a2c27e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A26 5064 bytes
font_01_sfnt_off00006b78.bin
cb2805e3576dce55f7b076533d6d0ca6544666be35b12e63930fc726acea5890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B78 11404 bytes

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