Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5606e299a9deebc…

MALICIOUS

PDF

74.0 KB Created: 2020-03-22 09:44:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 55819755a8bc4c8dd92e174705748693 SHA-1: fd62890de4d35ff4d1ae56c6b5a54f573a1020e9 SHA-256: a5606e299a9deebc99b328a3e7ad7aa5588f6db392df12195be3b58b1b7d5d4b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF document contains a significant number of external links, many of which point to other PDF files, suggesting a link farm or SEO abuse tactic. Additionally, the document body contains a callback phishing lure, instructing the user to call a phone number for support or billing issues. This combination of tactics indicates a likely phishing or scam operation designed to deceive users into contacting malicious actors.

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://pbjconstructionllc.com/uploads/1/3/0/4/130476525/130476525.html#marathon+wr50m+watch+user+guide
    • http://allsteelbuilders.net/uploads/1/3/0/6/130621418/1306560.pdf
    • http://carpetcleaning-phoenix.com/uploads/1/3/0/4/130492441/7648521.pdf
    • http://gymprotathlitis.com/uploads/1/3/0/2/130289589/1540089.pdf
    • http://autodiscover.kevinsdeli.com/uploads/1/3/0/4/130475966/3816247.pdf
    • http://northelkinchurch.org/uploads/1/3/0/3/130313120/xebafasoderara.pdf
    • http://southernintegrity.net/uploads/1/3/0/6/130604355/desejesusevimi.pdf
    • http://msjacksonsclass.com/uploads/1/3/0/7/130740087/sevotobuvewu.pdf
    • http://bitcoinexchange.net/uploads/1/3/0/5/130539048/7197036.pdf
    • http://nycfurnishedrentals.us/uploads/1/3/1/0/131070843/56aec.pdf
    • http://bluegalaxygamer.com/uploads/1/3/1/0/131070574/eda9187.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_off0000dc84.bin
ca6f01e4a056f60c04b96f2f10e6b31c067408338ab34d24091322007c282b40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC84 12264 bytes
font_01_sfnt_off000103f5.bin
4c8702bf2685272063a126a2ed0cce728640a3d7461b6ba13d31dc0864862f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103F5 16084 bytes

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