Malicious PDF — malware analysis report

Static analysis result for SHA-256 275e8290fc96b3c1…

MALICIOUS

PDF

56.9 KB Created: 2020-08-12 15:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 940debba217e99aac87aa0050a0b7a25 SHA-1: 29101fd837b3a5a383bba78c01cf70f016dab8d2 SHA-256: 275e8290fc96b3c12c7f52af588eed3f9d297a8a8aed434a87e5f3c4db1a50d5
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=ambaji+aarti+free+download+in+gujarati+pdf+free+download`. The document body also contains this URL and other links, suggesting a lure for users to download content. The presence of a link farm heuristic further supports the malicious intent of redirecting users to external sites.

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=ambaji+aarti+free+download+in+gujarati+pdf+free+download
    • http://files.sarusfestival.org/uploads/1/3/1/4/131453894/3958547.pdf
    • http://files.britemoonmarketing.com/uploads/1/3/0/9/130969535/3798217.pdf
    • http://files.scarfandbow.com/uploads/1/3/0/7/130775192/1126f846a46b.pdf
    • http://nopojobe.steamuptheclassroom.com/uploads/1/3/2/8/132814930/mevog-zawurut-welalajar-fexis.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9201/files/possessive_pronouns_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/72056847999.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/13111961519.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/27268619972.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/66009070793.pdf
    • https://cdn.shopify.com/s/files/1/0430/5226/9717/files/limebiwixebixozupevero.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/classroom_assessment_for_student_learning_stiggins.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2255/files/36081513741.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/26866725574.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9045/files/como_aprender_ingles_libros.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/90602389268.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_off000096ab.bin
351f7bbb98937c13428de09a7e6739eaa2ebfd590a8962b9af64aec1f9b953d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 5480 bytes
font_01_sfnt_off0000a944.bin
48b933fb640d765646c8cd8b3401cb6ceefb0d8aeebdf95e2f1b9c0c924927df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA944 14372 bytes

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