Malicious PDF — malware analysis report

Static analysis result for SHA-256 1de121bb41512a53…

MALICIOUS

PDF

49.7 KB Created: 2020-08-16 10:55:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a38d5a664b3e28ce74c5a4dc239b06ec SHA-1: 490c48959a06dc8b9615171a6fc3b3d8a92650b5 SHA-256: 1de121bb41512a531a7846d82f4667097b5de527b57361ff38964e11ceceae45
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Chick-fil-A app promotion. The primary malicious URL, 'https://ttraff.com/pify?keyword=chick+fil+a+app', is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, including one pointing to 'http://xibasobak.evolution-erie.com/uploads/1/3/1/4/131453784/cbc0ad7d5895.pdf', suggesting a broader distribution or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=chick+fil+a+app
    • http://xibasobak.evolution-erie.com/uploads/1/3/1/4/131453784/cbc0ad7d5895.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/39268373481.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/bawuzipiragab.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/palefise.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/vulavusogezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdf
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/93224267109.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/indrajal_comics.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/ielts_listening_practice_test_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/learning_license_test_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/wakofamovesogiwuwedopav.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_off00007e8e.bin
9a76416e8fd9eceeab3fe2e4c2b690259956c18bc4e99b87951d3fcb776ae781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8E 4800 bytes
font_01_sfnt_off00008ed8.bin
077f1270b6ca76864a9b425e9852c692e21344351a27e2ec07f537483d60f82a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED8 13748 bytes

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