Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b051c000959706…

MALICIOUS

PDF

45.9 KB Created: 2020-08-22 13:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01b3bd3047c279789900eb3b69907d61 SHA-1: 05adbbea57aaad56cc14ad465850bbad399a2bd9 SHA-256: d9b051c000959706cb6c20ca9ac32a029b9fa2a8a6d83c0272966d406c8ac564
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, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=counter+terrorist+2+mod+apk+android+1', is designed to lure users with the promise of a game modification. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. While no scripts were extracted, the presence of these malicious links and the ML classifier's high confidence score indicate a phishing or redirection attempt.

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/pify?keyword=counter+terrorist+2+mod+apk+android+1
    • http://duninevi.saverahwaypark.org/uploads/1/3/0/8/130813108/bopewepoxokonoxim.pdf
    • https://cdn.shopify.com/s/files/1/0428/7650/2175/files/54682543083.pdf
    • https://cdn.shopify.com/s/files/1/0434/6170/5890/files/79769849945.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/botumikat.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/zulakufusudozapoxilol.pdf
    • https://cdn.shopify.com/s/files/1/0434/8428/3033/files/22701100506.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/15936325417.pdf
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/30115365744.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/mixed_mole_problems_chemistry_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/3936/6047/files/japan_car_auction_sheet_verification_online.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fe7.bin
331ab376ea66d7728919970b5277e65c38d569e5a15049a2b9c96dbe09de70db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE7 5228 bytes
font_01_sfnt_off0000719c.bin
9e9737f3716ffeab235d47fe0a3631ef7eaa27c53965b7d09c7d90253704244a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x719C 10544 bytes
font_02_sfnt_off00009524.bin
53c3ec829963ec5a0af1bff4be2d724acb9959b277e5253d769434e6be684fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9524 16160 bytes

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