Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04d9c8797509bf3…

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 06:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2fc1c8cfb10d24a7cbb3c02bfed6287 SHA-1: 3c9299b1044a0ead8ec626d3f3f37f9edaf0bc96 SHA-256: e04d9c8797509bf3d432ddba260863416699584450abde2b5984441729820ccc
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm or SEO manipulation, with numerous embedded URLs pointing to external PDF files. One of these URLs, 'https://ttraff.ru/pify?keyword=assamese+baganiya+new+song', is identified as a known malicious redirector. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body content is largely unreadable, making it difficult to determine a more specific attack pattern beyond the link manipulation.

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.ru/pify?keyword=assamese+baganiya+new+song
    • http://zopipuwo.tooey.com/uploads/1/3/1/4/131408899/352963.pdf
    • http://files.simmsationalventures.com/uploads/1/3/1/8/131856877/7422831.pdf
    • https://cdn.shopify.com/s/files/1/0431/9779/2415/files/zaxafetimipimumuritu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2901/1359/files/kefupowesoke.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9250/files/toxinomilelekujanorenil.pdf
    • https://cdn.shopify.com/s/files/1/0432/5828/2152/files/john_deere_c1200_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9390/0958/files/importance_of_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/biboj.pdf
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/roy_williams_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/kissanime_naruto_shippuuden_dub.pdf
    • https://cdn.shopify.com/s/files/1/0435/0171/5622/files/conjunctive_adverb_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/5913/4112/files/medical_virology_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054c3.bin
c406489561c4af7b8e4c37c95feaca1bcc5ba68a5437a7205de50624d02410b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C3 5200 bytes
font_01_sfnt_off00006673.bin
55e75483aeab6e22cb62de07413d69e1f20b16b3354496fc118c60dd275b3ce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6673 4804 bytes
font_02_sfnt_off00007602.bin
2a88e6ed498377e82d1fa41cfe2bfcf2ba82bc36a338b4f3115f3b679dd12e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7602 14764 bytes

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