Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce706c1733778b60…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 15:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b96126da4a6b13d17f76676434827b1e SHA-1: afdebb9e468d51f6a859d148d971788a57901e1a SHA-256: ce706c1733778b6058a1d7aa9641f4ad25ea11b3c778d9fc2c307da1fb4968a6
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=the+batman+who+laughs+issue+1'. This link is presented within the document body, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many hosted on cdn.shopify.com, likely for SEO manipulation or to obscure the malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

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=the+batman+who+laughs+issue+1
    • http://files.seanjonesfitness.com/uploads/1/3/0/7/130740561/rabixeto_tuveluroxuguj_finuvigejotep.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/saxununedalipasanazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/ib_hl_biology_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/visomoxaguvadabirasupose.pdf
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/47585907032.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/bollywood_box_office_capsules_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1617/files/sudaxaxuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/livatopisipesagamarujuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4157/0466/files/sozasorawudobusubipipik.pdf
    • https://cdn.shopify.com/s/files/1/0440/7531/9448/files/21706533405.pdf
    • https://cdn.shopify.com/s/files/1/0447/3788/8410/files/volume_of_a_cuboid_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2450/files/weteke.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3880/files/94524112949.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_off000063b1.bin
e0eb10faf66c222b3b3fd4ccfeac37f285f5c20a8b096a107c1b970d52eeeb5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B1 5236 bytes
font_01_sfnt_off0000757c.bin
ba4a15b0817177ddb487e2e971754bc7d665528c8897fc10debc4ddceafba254		 pdf-font-stream PDF embedded font (sfnt) at offset 0x757C 9968 bytes

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