Malicious PDF — malware analysis report

Static analysis result for SHA-256 2863a32af8b7d646…

MALICIOUS

PDF

66.2 KB Created: 2020-08-06 01:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b679ea28d2e12ef289471e236bfec357 SHA-1: d739a8347d3d66d0d28f674b9b63ce85bcce8666 SHA-256: 2863a32af8b7d646af14b8c3f782a3efd5dc15d1dc26de1efe049344e618abf9
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 'ttraff.com'. The document body, though heavily obfuscated, contains the string 'Apple iphone 8 specs pdf' and the malicious URL, suggesting a lure for users interested in product specifications. The PDF also contains a large number of external links, many hosted on Shopify, indicating a link farm used for SEO poisoning or distributing malicious content.

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=apple+iphone+8+specs+pdf
    • http://files.stowersfireandsafety.com/uploads/1/3/0/8/130874026/boromifum.pdf
    • http://files.nocofoodincubator.com/uploads/1/3/2/7/132741081/1256216.pdf
    • http://files.elephanteater.org/uploads/1/3/1/4/131438629/5421357.pdf
    • http://ririsutes.rockyouthministry.com/uploads/1/3/0/7/130776485/ralibobozemerezusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/84259870940.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/wagoriderutulunevuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/6143/5813/files/942760735.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56697352128.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6854/files/75395623215.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5464/files/bearing_size_chart_in_mm.pdf
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/5647191091.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/tepijazonibimonemase.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/wujudemejov.pdf
    • https://cdn.shopify.com/s/files/1/0437/7097/0274/files/xujivituraxuwapolunizapew.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/fabazasekafaguwogolewopu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/kovokegosifenugokevolipig.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_off0000b9ae.bin
7dc185d9494965204ffd7c2bc244093c42ffddf16bcd1a016a2ed5d4f4084cca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9AE 5120 bytes
font_01_sfnt_off0000cb27.bin
60fc4a001b4ffa0d32b472ab540d1dd127ae4d51cb6297cb84514cc8b5a883ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB27 15248 bytes

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