Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba92cde4153abca…

MALICIOUS

PDF

43.5 KB Created: 2020-08-22 05:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 028d13b69657836059c4f1f129147ac8 SHA-1: 4104f95f31e3c39de58774afc7aecd77713d05d6 SHA-256: 2ba92cde4153abca6972a98bf7780edcb1a93e4d6a2d8d315c6ad714c80006f3
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=bostitch+air+compressor+btfp02012+manual', which is flagged as malicious. This suggests the PDF is designed to redirect users to malicious content, likely for phishing or malware delivery.

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=bostitch+air+compressor+btfp02012+manual
    • http://files.empowerunit.org/uploads/1/3/0/7/130739593/savipuxu.pdf
    • http://bomovuxof.timberlinetrailandnature.com/uploads/1/3/0/8/130814328/rulonut_wabomavadujoner_jonewudowoji_letogalo.pdf
    • http://lejap.kelsey-kane.com/uploads/1/3/0/7/130739625/b8abd618d9.pdf
    • http://zipowol.cattailcreative.com/uploads/1/3/1/4/131453329/4260edb29f0.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/53671574793.pdf
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/11693511052.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6755/files/66568506945.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6042/files/6219037857.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/cushman_turf_truckster.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8795/files/31626533375.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/85314853682.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/manavojapejovotudiput.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2394/files/adobe_acrobat_to_word_free.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_off00006a19.bin
aba770c43846dd479f332b38ed01950218acc676b8a8533578006330f5ace33e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A19 5768 bytes
font_01_sfnt_off00007d9c.bin
65f84d6a3e0683067c6ef769d349119fb5ebe85b09e48ed4214f146b019fe003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9C 10440 bytes

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