Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad345a40e457709…

MALICIOUS

PDF

55.0 KB Created: 2020-09-01 02:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c2b83e9b87fca4d4b2283f97ac8659f SHA-1: 900f4a7fac0b922bf978de0284d45f4ba372cde3 SHA-256: 1ad345a40e457709b586f88690ed8b67a3650fa9ab76a620a562344336263efd
120 Risk Score

Malware Insights

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

The PDF file was generated by wkhtmltopdf and contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. One of these links, https://ttraff.cc/pify?keyword=cashapelayer+path+performance, is identified as a known malicious redirector. The document body contains garbled text along with the redirector URL, suggesting it is not intended for legitimate user interaction but rather to facilitate the malicious redirection.

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.cc/pify?keyword=cashapelayer+path+performance
    • https://static.usrfiles.com/ugd/b8c837_0c6c4cfe9e2c4544a832ff54fb6545bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_d09a7755d81c41c5be4fe9e2f898cce6.pdf
    • https://static.usrfiles.com/ugd/a18aa6_8c154ea59c1b4e488109de19318cc421.pdf
    • https://static.usrfiles.com/ugd/2c608b_5b5c05c3380844b49bf48b87a183f8ab.pdf
    • https://static.usrfiles.com/ugd/c836c3_d8f0dbb0bd894853a0a6f543476c4fcc.pdf
    • https://static.usrfiles.com/ugd/b8c837_767516d29e734ebca158c269edd07f9c.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_fd9255b287a34575bbcfe41481fa4df7.pdf
    • https://static.usrfiles.com/ugd/83d902_e0428d9f544748e1b5c1a956dba75450.pdf
    • https://cdn.shopify.com/s/files/1/0433/6762/8950/files/wordly_wise_book_8_lesson_6_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/64455145230.pdf
    • https://cdn.shopify.com/s/files/1/0439/9444/8030/files/dinimamitivumukuposaruna.pdf
    • https://cdn.shopify.com/s/files/1/0432/2849/6036/files/fagawagivoxejudusulun.pdf
    • https://static.usrfiles.com/ugd/764aaa_36c31347aecf434db4bbcaa93bc8226c.pdf
    • https://static.usrfiles.com/ugd/804ff6_c207a21a3d9740c0afc5f52b2c2aba7f.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_off00008af7.bin
9bd18bc48b18f06c5a2210454b18c8e11ca2402cea711ac2b2ff2e19052623f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF7 5120 bytes
font_01_sfnt_off00009c41.bin
3ecf54136f191120bf763e3702e6277494b0fed9565e579fdc0639466c05d3c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C41 10844 bytes
font_02_sfnt_off0000c155.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC155 4324 bytes

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