Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e7a6a3829b1587…

MALICIOUS

PDF

39.5 KB Created: 2020-08-25 21:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6a160a346945f0f758c4fe3021ede3a SHA-1: 4ead6d716bb0cc97a1d8c13d15005733b34e3a33 SHA-256: 32e7a6a3829b15879d9221004540abd6426ac465e7359a860ea24e092adfbc71
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=xcom+2+war+of+the+chosen+skirmisher'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering through deceptive links within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=xcom+2+war+of+the+chosen+skirmisher
    • http://lekon.labordebeefalofarms.com/uploads/1/3/1/6/131637309/3524762.pdf
    • http://files.libbymourant.com/uploads/1/3/2/6/132683154/sadubibeleref.pdf
    • http://files.posterworksgallery.com/uploads/1/3/0/9/130969097/pamatatajupexa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/75456891440.pdf
    • https://cdn.shopify.com/s/files/1/0434/9149/1990/files/hernia_inguinalis_strangulata.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/65274577066.pdf
    • https://cdn.shopify.com/s/files/1/0429/5150/8131/files/32030242217.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/weruri.pdf
    • https://cdn.shopify.com/s/files/1/0450/6114/4728/files/cambridge_english_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8378/4601/files/kakadanonoruzoleliziniv.pdf
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/ctet_eligibility_certificate_marksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/lagu_andmesh_kamaleng_full_album.pdf
    • https://cdn.shopify.com/s/files/1/0437/0409/0792/files/calligraphy_name_app_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/0388/5206/files/dulowugonagodarewedoluxe.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
c4b7f266f02890836154d9772cb49b79ebae3ea7b7d7bd7ddd2bdeded34fa7ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C54 5356 bytes
font_01_sfnt_off00006e73.bin
0092103ac38f79a77d7bde09d40521612c11403b5d21c98f045fd848377c5bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E73 10236 bytes

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