Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0fefbf90c3969e…

MALICIOUS

PDF

52.5 KB Created: 2020-08-10 09:34:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 637cc83aa1f53391692b018654ad5a68 SHA-1: 781032445fc20285e36799cd0257499ece602ddd SHA-256: ec0fefbf90c3969e684bc9a5d6a73b4b7f226354e33d6ea17d7145d1a0a85603
140 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure related to a product listing. The presence of many links, including one pointing to a known malicious redirector, suggests an attempt to direct users to malicious sites for phishing or scam purposes.

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.com/pify?keyword=dell+poweredge+r740xd2+pdf
    • http://files.musicianpierre.us/uploads/1/3/2/6/132696174/cd9d821b55a903.pdf
    • http://files.thelafs.com/uploads/1/3/2/8/132815979/wetotosi.pdf
    • http://files.srmsmusic.com/uploads/1/3/1/8/131856160/voxujojofizi-radexubokulaz-jutedofes.pdf
    • http://files.srmsmusic.com/uploads
    • https://cdn.shopify.com/s/files/1/0431/4677/2646/files/loduwulisojopisu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/jijunotufezudova.pdf
    • https://cdn.shopify.com/s/files/1/0429/2293/4435/files/team_building_games_indoor.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/camera_shake_after_effects.pdf
    • https://cdn.shopify.com/s/files/1/0441/3181/1480/files/wiwotevipoxekalo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8364/5599/files/25389147440.pdf
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/3606374521.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/95197856480.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/60834107602.pdf
    • https://cdn.shopify.com/s/files/1/0438/1147/1520/files/wexojijamefokatoza.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/bugegojikibudubinu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6971/files/retencion_placentaria_en_vacas.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_off00008246.bin
82a55c27aeff82350a5a9538056393278a2fb73ebb68fef1ddcd8adc2ac0f192
pdf-font-stream PDF embedded font (sfnt) at offset 0x8246 5424 bytes
font_01_sfnt_off000094fe.bin
be36e50b16abb85fb87c7714684e01b109c7503a6875984e61c6f88df4605cc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x94FE 15744 bytes