Malicious PDF — malware analysis report

Static analysis result for SHA-256 a06f6cc6e3b90ad5…

MALICIOUS

PDF

45.7 KB Created: 2020-08-31 19:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3328bbd0d71204f38d7b4562cbfbe16 SHA-1: 9ef5b849dbe89f7bf80db139f8b1a7180ad581ef SHA-256: a06f6cc6e3b90ad5ca86df77ec3d82b7e7ff430a0b05422062938461a55ee95c
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a malicious redirector link disguised as defense travel system instructions, aiming to lure users to a potentially malicious website. It also features a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The presence of a callback lure further indicates 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.club/wix?keyword=defense+travel+system+constructed+travel+worksheet+instructions
    • https://static.usrfiles.com/ugd/b8c837_0cdca71efa4d420dae24df829404ce47.pdf
    • https://static.usrfiles.com/ugd/b8c837_dcdcae093c5d4f0183a0be9bb8c53f65.pdf
    • https://static.usrfiles.com/ugd/4117a9_c09e3842083547aab097a0f8646711c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_614345f4df674ab5bdd4266c150813d2.pdf
    • https://static.usrfiles.com/ugd/5b9365_1f5ef313131b4085a9480fce3dff47b3.pdf
    • https://static.usrfiles.com/ugd/286fb8_dbae2ac75b4e4bf0bbe15ed8a4df89c9.pdf
    • https://cdn.shopify.com/s/files/1/0434/0636/0730/files/rukijepitilodajelewo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/nacho_libre_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/calculator_convert_scientific_notation_to_standard_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6211/files/71966416877.pdf
    • https://cdn.shopify.com/s/files/1/0429/5150/8131/files/10632024349.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/46540512723.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_off00006432.bin
b4c1335b9a23d7fcad1181b4725da93b3fbb4674986461a7f883785610276d64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6432 5460 bytes
font_01_sfnt_off000076af.bin
6ac7d815b878a0eec5fd41fc2583dfb506ffc4ae1205e8245ef868b996dd9f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AF 10704 bytes
font_02_sfnt_off00009b47.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B47 4324 bytes

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