Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae282db561fd1f2…

MALICIOUS

PDF

49.7 KB Created: 2020-08-17 05:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ac2abd3baeec1025d16ea79ae308177 SHA-1: 912a9cdcd34a9762c9644372980789de9362c50b SHA-256: 8ae282db561fd1f2485137fe72082027f5221adddba814aea6610e02857b0532
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a 'PDF_SEO_LINK_FARM'. Many of these links lead to a redirector service ('ttraff.com'), which is flagged as malicious. This suggests the document is designed to lead users to malicious websites, likely for phishing or to download further malware. The presence of a malicious redirector and a link farm strongly indicates a malicious intent.

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=kaposi+varicelliform+eruption+causes
    • http://files.nostalgicmotorcars.net/uploads/1/3/1/3/131379832/giwukufipogog-bavawijur.pdf
    • http://files.faithmortimerauthor.com/uploads/1/3/1/4/131406173/b550d50f380e6.pdf
    • http://zuret.bowerarts.com/uploads/1/3/2/6/132695969/gejuganu.pdf
    • http://files.miss-strench.net/uploads/1/3/2/6/132681749/37fbbe62173.pdf
    • http://files.reikifortheplanet.com/uploads/1/3/2/3/132302815/5645773.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8954/files/fbr_amnesty_scheme_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/gesibogepebuxojisononofu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6763/6902/files/cursive_writing_practice_sheets_sentences.pdf
    • https://cdn.shopify.com/s/files/1/0430/6527/8625/files/xatokivupagerufirufifuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/jakozovulagufi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/xaguwuduki.pdf
    • https://cdn.shopify.com/s/files/1/0439/9264/5790/files/addition_word_problems_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/52292828349.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/wordly_wise_book_8_lesson_4.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/
    • https://cdn.shopify.com/s/files/1/0434/6763/6902/files/cursive_writing_p

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083f2.bin
fcff6f722457c691a184374d94f5e4d19770fde49d7d869ab12f0340510f5611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F2 5188 bytes
font_01_sfnt_off00009588.bin
f5062c567c7de1672f475b9a174cd227d9c8aaf3526ea67f253ad6f82f7fc436		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9588 10680 bytes

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