Malicious PDF — malware analysis report

Static analysis result for SHA-256 9443f368d58e8e9e…

MALICIOUS

PDF

66.1 KB Created: 2020-08-08 04:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eabebaf32c5b5d1c115a51f64ee5e926 SHA-1: b2229aeacb78172d89d8baf99840831f72a40c83 SHA-256: 9443f368d58e8e9eb9a5a85a2d7c8b739ee36723e678a96eb35baf03c50d984a
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external content. The presence of a mass external PDF link farm further indicates a malicious intent to distribute links. The low-signal heuristic for a download button reinforces the idea of a deceptive user interaction.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adobe+photoshop+cs5+tutorial+pdf
    • http://files.cedarscapesllc.com/uploads/1/3/1/0/131070861/walale.pdf
    • http://files.weenglishpersonalproject.com/uploads/1/3/1/3/131382673/926816.pdf
    • http://files.pinkmousehouse.com/uploads/1/3/1/4/131455543/zojopi-vezizowet-melege-temagipumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/mathematical_physics_by_gupta_kumar.pdf
    • https://cdn.shopify.com/s/files/1/0450/4210/6518/files/actualit_socio_conomique_en_afrique_francophone.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/xamonimawebojuke.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/52991617285.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/clasificacion_de_los_animales_segun_su_reproduccion.pdf
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/sample_occupational_therapy_soap_note.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/73692861934.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6599/files/statistical_language_learning.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_off0000c56e.bin
f7abcd3d10b527623f33c1886cd07e46f1951f80eddd164c36dd2f09aa7be412		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC56E 5496 bytes
font_01_sfnt_off0000d81c.bin
7540ac3849b01ff5e13d262bc21de7a456332c1f3f7fb104bd6e6400e8e6b0b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD81C 10420 bytes

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