Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc6ce1bf419c303…

MALICIOUS

PDF

46.2 KB Created: 2020-08-30 07:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41c51ef5b94560ce0b2511ce12487363 SHA-1: 09de34cf39721f492f856de899146597eca9c9a8 SHA-256: 0fc6ce1bf419c303bcee2cdcd6b487024438e9a1a59b3b1328cf9490d7e90f0d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/wix?keyword=french+accordion+music+valse+musette, which is likely used to direct users to further malicious content. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=french+accordion+music+valse+musette
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_e36b7e4a920346da937485d9921a63db.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_a0e9dde3d6004ae487768afec524f4a0.pdf
    • https://static.usrfiles.com/ugd/1849a1_24f2c93397ce4aaa88a8cb895493b620.pdf
    • https://static.usrfiles.com/ugd/77eba6_5410d79d638f414fbdda87041de2cec6.pdf
    • https://static.usrfiles.com/ugd/b8c837_98fbcd487e8d4872953a609484692e11.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf663ef75b884e2ba445f1a2d681b5c6.pdf
    • https://static.usrfiles.com/ugd/6da380_618520f9836441efa96cff3c177f9c65.pdf
    • https://static.usrfiles.com/ugd/bfbc46_d20a2c5af757463b8202abfb72f93b34.pdf
    • https://static.usrfiles.com/ugd/50de67_82f702e5617f4106a5438ce1795b8ee0.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7733/files/xazopigifoxir.pdf
    • https://cdn.shopify.com/s/files/1/0432/2829/9428/files/14546083941.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/nutakidaxurasaroxeno.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/20593731961.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/nolajonagotofawo.pdf
    • https://static.usrfiles.com/ugd/b8c837_41e7b55853824b1d8aa276587fab3c5e.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_dccb21c523064b72979f850074b2a0a6.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_9e435579c7324574ba150b2f3ff01893.pdf
    • https://static.usrfiles.com/ugd/b8c837_66dc8210f9214acfbe9ec9d284a283d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_1906bb1a8ecc41209f4824dbbc3168b9.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069bd.bin
7738869764bebfe5306b5ac5223d2bce6e9d5b3de3a74137be3d7c00a2bb999c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BD 5076 bytes
font_01_sfnt_off00007ac3.bin
31d7c0d177c6a23f4e119749459336b59800d79efa286f46a711ca82052a7121		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC3 10268 bytes
font_02_sfnt_off00009db2.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB2 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.