Malicious PDF — malware analysis report

Static analysis result for SHA-256 7910cc4743bd3bd1…

MALICIOUS

PDF

39.6 KB Created: 2020-09-01 08:17:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a0dd3fb8770ea91bdc3d4404de2e75f SHA-1: f6a3932aea04def9db3c3577126ec2be836caf23 SHA-256: 7910cc4743bd3bd13be23ec53625e74d0c60d3e4a7050b7f48cb52c33d55f89b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to funnel users to further malicious sites. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external documents. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to direct users to malicious content, likely for phishing or malware delivery.

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.com/pify?keyword=bose+soundbar+300+operation+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/824332_5abae727511d433a90c5c94d7bdb3da9.pdf
    • https://static.usrfiles.com/ugd/f46427_649f8be500b240d9a6b0e0ba65235396.pdf
    • https://static.usrfiles.com/ugd/b8c837_850cc327589a45208b28dc84f8620dea.pdf
    • https://static.usrfiles.com/ugd/e02969_91b639fe2b334f5cb09d80970874c383.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_dd62bc2dea584867ab13c3942e525dfc.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/pdf_splitter_and_merger_free_download_for_windows_7.pdf
    • https://static.usrfiles.com/ugd/87d215_7f692c4a756f4478b7d297586a38adeb.pdf
    • https://static.usrfiles.com/ugd/0047a4_cc65ce3ee32a43cd9e356b5dc2cc1745.pdf
    • https://static.usrfiles.com/ugd/ea2f88_88f1e6f9e0df44718d8436ac8020c653.pdf
    • https://static.usrfiles.com/ugd/704566_9095d0221ce74adc85087925f22db9fc.pdf
    • https://static.usrfiles.com/ugd/76156b_c6ca0a4027e04195b9f5cd57e9d3ea9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c67f7cb46ec4db4bb313ee2c5d72f4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f8629d34a104fcbbdbd889419644290.pdf
    • https://static.usrfiles.com/ugd/d775a9_3e695c4005744549bca2352953a50355.pdf
    • https://static.usrfiles.com/ugd/b11f6d_07b899d061f6452c83b4fa043df396f9.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_off00004de4.bin
f6b89925af60c173c10638bf6de6538f1c7d3e966aa83c3be92540783df79f89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DE4 5480 bytes
font_01_sfnt_off00006059.bin
49907fdaf84c7f7a53252ebfa92d8cf48a42a247a90d0e2a95107d4720bbdd56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6059 10216 bytes
font_02_sfnt_off00008347.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8347 4324 bytes

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