Malicious PDF — malware analysis report

Static analysis result for SHA-256 c532589d2deedb84…

MALICIOUS

PDF

43.4 KB Created: 2020-08-25 07:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9443102e77f6d8b6f90ed2781c6decff SHA-1: 4a8d15709eaaa80e45f96ff3620b37cf463d0e13 SHA-256: c532589d2deedb84cf7108847710ca541787b19019399cd67ecbc66a8cbaf34f
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though corrupted, contains text related to 'Gateway b2 tests answers' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous external PDF links further supports the SEO link farm heuristic.

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=gateway+b2+tests+answers
    • http://files.pascalletourneau.com/uploads/1/3/2/6/132681992/9685983.pdf
    • http://zigodij.anyakunze.com/uploads/1/3/2/6/132683289/c6c418506dc6.pdf
    • http://files.malawiecosolutions.com/uploads/1/3/1/4/131408170/1605936.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/is_it_love_matt_answers_chapter_2.pdf
    • https://cdn.shopify.com/s/files/1/0437/8384/8093/files/cartoon_boy_photo.pdf
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/bawefulesogopawaxujiv.pdf
    • https://cdn.shopify.com/s/files/1/0465/1633/8838/files/29966851386.pdf
    • https://cdn.shopify.com/s/files/1/0436/4845/0718/files/95281297122.pdf
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/font-_weight_css.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/kaxum.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/dinujibafoxegike.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_off00006afb.bin
048c2e70ef3728713eed35d6bc5ac814bf5c5e0cab72285236712accfaa1d16e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFB 5144 bytes
font_01_sfnt_off00007ca8.bin
174cf440dbe701462ecf6a785047e3ec9d1977e234e0c758e0eb9db18d123d77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA8 11100 bytes

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