Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fbeeb17984b413…

MALICIOUS

PDF

37.4 KB Created: 2020-08-04 17:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a645c02353ffc48075fc9020ffb3f6b SHA-1: 30d415bece8c6df3436a22eec304255a7328cc64 SHA-256: 96fbeeb17984b4138bbf33edaea863c66d4b84414882d87b907c65720536faf1
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure users to malicious content. The presence of numerous other links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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.ru/wb?keyword=thetford%20porta%20potti%20curve%20manual%20pump
    • http://files.cowtowncountryclub.com/uploads/1/3/2/7/132741194/pudaxirenabanif.pdf
    • http://files.agardenforknitters.com/uploads/1/3/1/4/131453651/ledudimijiwifiz-vatewi-zatus.pdf
    • http://dumozebi.hustondemskyproperties.com/uploads/1/3/0/8/130874304/4313083.pdf
    • http://files.geppscrosscricketclub.net/uploads/1/3/0/8/130813320/4034730.pdf
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/35512074912.pdf
    • https://cdn.shopify.com/s/files/1/0430/1524/1891/files/wavugamugefino.pdf
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/gomozepadu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdf
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/lebebosezuxut.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/juteb.pdf
    • https://cdn.shopify.com/s/files/1/0437/7044/5975/files/applied_research_study.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91025233068.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/59713422773.pdf
    • https://cdn.shopify.com/s/files/1/0450/4079/5806/files/arduino_microcontroller_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0440/5903/3752/files/12588663357.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_off0000517b.bin
af4d3df6a0822fdb96cfd656351bf87ab27ade6aeec4471be18c41730770b006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x517B 5228 bytes
font_01_sfnt_off00006320.bin
f67a0285909ec1c46f72d7ec01a90623d7df75dec507cc378f7f7cf64909da88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6320 10548 bytes

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