Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8a34beb3f64e342…

MALICIOUS

PDF

80.1 KB Created: 2020-08-15 05:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72d8b04f9521d150e9d49f53a8343a9b SHA-1: 52f05cb0c77c137b5333fe515268cf8a9e922614 SHA-256: a8a34beb3f64e342ecb18bf47951cc13718a6e57c112831ba32c25e514263dbc
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it is the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely to improve SEO and disguise malicious intent. No scripts were extracted from this sample.

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.cc/pify?keyword=dragon+age+inquisition+astrarium+guide+frostback+basin
    • http://fukelopif.princealbert.cjsclimbandplay.com/uploads/1/3/2/8/132814930/kovojizeva-wojofes.pdf
    • http://lirapivip.alma-cac.org/uploads/1/3/2/6/132680955/e0d087bd01e8e.pdf
    • http://gezox.poetsinthegarden.com/uploads/1/3/0/9/130969204/37edc008d9a.pdf
    • http://files.abbeypsychservices.com/uploads/1/3/1/3/131380045/feniz-zupuwuj-lukatu-taxagomo.pdf
    • http://dezur.kingdom-institute.org/uploads/1/3/1/4/131453541/e007fa48dd4a15f.pdf
    • https://cdn.shopify.com/s/files/1/0429/0392/8991/files/pathfinder_inner_sea_faiths.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/under_the_radar_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/lafoxovaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/pejaxevuposodadakotemile.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/69467587622.pdf
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/83190967634.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/blood_type_b_food.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/pukarisusimejuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/3665/5259/files/windows_command_prompt_all_commands.pdf
    • https://cdn.shopify.com/s/files/1/0428/3006/9927/files/tesis_de_grado_administracion_de_empresas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/mixogemasepimisebibin.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_off0000dfa5.bin
04d2ad2666af469ed4dc41654918379ecf28b88adaf990c863530567ddd68124
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA5 5520 bytes
font_01_sfnt_off0000f24e.bin
17bf7edf1b1d3d3a4b3d050c135bbfe24e6846ae2362752387a3d7e75a41001a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF24E 15380 bytes
font_02_sfnt_off0001223a.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x1223A 4324 bytes