Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1021f3a91646a8…

MALICIOUS

PDF

37.7 KB Created: 2020-08-19 12:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 699a97c29455f19a9e3d52cf80a40dbc SHA-1: 454ed744929efba4d805630e4730f8f5a2a362eb SHA-256: dc1021f3a91646a81392366a7e94d513d70be8b7ca91cf59b3da4adc1141d4c2
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=nfl+injury+report+saints`. Additionally, it exhibits a PDF link farm pattern, with numerous links pointing to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute content. The presence of a callback phishing lure further indicates a social engineering attempt. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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.cc/pify?keyword=nfl+injury+report+saints
    • http://kolifi.unnatinarang.com/uploads/1/3/2/6/132695615/8423704.pdf
    • http://files.amandabeekhuizen.com/uploads/1/3/1/4/131412858/f1437f969.pdf
    • http://files.katiemichellefriedman.com/uploads/1/3/1/4/131407882/liwefowemawujisimop.pdf
    • http://files.talltechteacher.com/uploads/1/3/2/7/132712623/1837967f4c.pdf
    • https://cdn.shopify.com/s/files/1/0439/5496/2590/files/29945785260.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/ashcroft_care_home_formby.pdf
    • https://cdn.shopify.com/s/files/1/0440/5395/4725/files/49779750647.pdf
    • https://cdn.shopify.com/s/files/1/0428/9301/7247/files/1502217715.pdf
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/anatomy_and_physiology_study_notes.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7763/files/rodug.pdf
    • https://cdn.shopify.com/s/files/1/0447/8317/3798/files/b._sc_maths_model_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0432/3655/6962/files/25853416076.pdf
    • https://cdn.shopify.com/s/files/1/0435/3890/7288/files/33824904174.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_off0000565f.bin
183ddd850872d872bdcfeef678e39c9e5661865db12c6cf406af8f0783816d69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x565F 5044 bytes
font_01_sfnt_off000067a1.bin
e036f678b6359dd8377a9d0c5462662087edcfa8d5711dc525b36fafa479fe77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A1 10140 bytes

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