Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a5f81acbf6cdc0…

MALICIOUS

PDF

40.5 KB Created: 2020-08-31 09:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69fe5628491a2ef5c980f0b58dfa6eb6 SHA-1: b48326fbffac0719f0f171a18821803fe071539d SHA-256: 94a5f81acbf6cdc0b6ce623b15a6ab87d413cb3ac2dbefb3f2dbd957d4a573ab
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=altyaz%25C4%25B1l%25C4%25B1+DVD+kopyalama'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in the attack. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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/wix?keyword=altyaz%25C4%25B1l%25C4%25B1+DVD+kopyalama
    • https://static.usrfiles.com/ugd/b8c837_821e933222a64af9b7de43d3807d34f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_dce6b614c31746b3a4c9b72b73c21fbc.pdf
    • https://static.usrfiles.com/ugd/41a0b6_4d09ba586e8b493b9f272b2f86155a99.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_cc103a208f124643968c082297eb7aba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6234/5384/files/niwefifuxunimubufodagonov.pdf
    • https://cdn.shopify.com/s/files/1/0447/7802/9213/files/olivier_blanchard_macroeconomics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0465/9429/3925/files/ny_jets_vs_giants_injury_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7732/0352/files/bandos_guide_alora.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/neumonia_nosocomial_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/44007796811.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/educational_vocational_guidance.pdf
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/81832984136.pdf
    • https://cdn.shopify.com/s/files/1/0435/2488/2583/files/27224711085.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_off00005dde.bin
6937081484bf69d5eb94176d44641ef0cad1da968281825d10cb3b5133b57412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDE 5084 bytes
font_01_sfnt_off00006f36.bin
56a644f754bb785bb7b9565ba41ed06208e82c61f18767ae64a10c5cab139360		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F36 11816 bytes

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