Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8af7f01ab394176…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 21:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c266cc75a25431367bb9df8eeb491d6e SHA-1: 960611bb235d193b689f52b562bb2147662eb31e SHA-256: b8af7f01ab394176a10966174211d8b28d5f796fa9f12094c6cb67f26523ceb6
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The document body, though partially corrupted, contains text suggesting an 'infringement notice' and includes the malicious URL. Another heuristic indicates a 'link farm' pattern, suggesting the PDF is designed to host numerous external links. The presence of a callback lure heuristic further supports a phishing or scam attempt.

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.cc/pify?keyword=infringement+notice+statutory+declaration+form
    • http://xumuv.midwestproductionrestoration.com/uploads/1/3/0/8/130874388/kifese.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/wujafoxovosivosiguzipojum.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1065/files/20194097229.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/lenovo_11e_chromebook.pdf
    • https://cdn.shopify.com/s/files/1/0454/2988/3048/files/daxosasabak.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/31992300600.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/calculation_formula_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/8790738405.pdf
    • https://cdn.shopify.com/s/files/1/0435/3317/2885/files/maths_worksheets_year_2_addition.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/3011793305.pdf
    • https://cdn.shopify.com/s/files/1/0434/3336/1574/files/yorke_peninsula_tourist_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/33098499593.pdf
    • https://cdn.shopify.com/s/files/1/0434/2936/3874/files/4908070759.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_off000063eb.bin
41aafdfd0df592420801627f024470d16160d9b6b2a69129e8fdbd3637ac85aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63EB 5380 bytes
font_01_sfnt_off00007620.bin
b5feb31b89205dbc08f7ff6a08fab2821f7826cd2bd828420ebdc0c655729f2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7620 10032 bytes

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