Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d30474ebb32bfd4…

MALICIOUS

PDF

42.0 KB Created: 2020-09-01 09:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e7a14cebbd628a67be35930ec1baaae SHA-1: 965764ef9d31b741f8d0bf3cf45fe73910f437ff SHA-256: 1d30474ebb32bfd4111b6e3f1f352ce38272aed310bc5efe3018c2077a094689
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive lure, presenting itself as a free C compiler for Windows XP. It embeds a mass of external links, with one specifically identified as a malicious redirector. This redirector, `https://ttraff.club/pify?keyword=c+compiler+free++for+windows+xp`, likely leads to further malicious content or malware download. The document's structure and link farm indicate a phishing or malware distribution attempt.

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.club/pify?keyword=c+compiler+free++for+windows+xp
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/retafifes.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/cancer_gastrico_borrmann_iii.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2775/files/56990992984.pdf
    • https://static.usrfiles.com/ugd/26481d_cc0a78f7c7eb45f4898cd1a0182272ed.pdf
    • https://static.usrfiles.com/ugd/97368a_9067e8f0eba649edaa86bed6f538e8cf.pdf
    • https://static.usrfiles.com/ugd/0c41e7_0dbf31bb14fa452b9cf9f60c2209471a.pdf
    • https://static.usrfiles.com/ugd/9421c8_3b1075ef6b63435f9b7cf4a4a57973dc.pdf
    • https://static.usrfiles.com/ugd/3e9e83_c374796b56fe4f32805ab851cbaf6acc.pdf
    • https://static.usrfiles.com/ugd/c836c3_dd8e80bc08494d608e3258c723a3d0e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ea319eff5db48a3b0b40251a6ba6f08.pdf
    • https://static.usrfiles.com/ugd/b48b60_2362fb6d29bf44029909ce04b84bfd76.pdf
    • https://static.usrfiles.com/ugd/0511f5_184528b083b6405cb894540bd9de0ab3.pdf
    • https://cdn.shopify.com/s/files/1/0431/0034/0381/files/89601460745.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/kitaga.pdf
    • https://cdn.shopify.com/s/files/1/0431/1823/1709/files/93922043057.pdf
    • https://cdn.shopify.com/s/files/1/0435/5253/8787/files/tenokixalisakaxut.pdf
    • https://cdn.shopify.com/s/files/1/0428/7257/0012/files/ffxv_max_level.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_off0000638b.bin
d621a414ab78d41944cff54996a87a62e9699263595fe6607c40389d8192c110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x638B 5156 bytes
font_01_sfnt_off00007513.bin
7fedf04755b7559a19df2bd88a6a6a34b52958d5e24ead6220c56743a8d5cd6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7513 11400 bytes

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