Malicious PDF — malware analysis report

Static analysis result for SHA-256 8449882a23d61fb2…

MALICIOUS

PDF

42.7 KB Created: 2020-08-30 15:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fe2416478fc3ca484a22f9ec26aadf3 SHA-1: 94790ae7d9d5a06ce10aa973d88956995299e297 SHA-256: 8449882a23d61fb2c6427ba08652a310b149ce738ee000e7a4d7c1391e82e5ff
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'driver download windows 7' and includes the malicious redirector URL. The presence of a 'download button' heuristic further supports the lure tactic. The primary IOC is the malicious redirector URL, which likely leads to a further stage of the attack.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=vf+0040+driver+download+windows+7
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/didupiwotatozi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/nipaki.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/95246100149.pdf
    • https://cdn.shopify.com/s/files/1/0438/2805/2130/files/artificial_insemination_in_cattle_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_69ae1af4966641d28ffdef2ab6e409a6.pdf
    • https://static.usrfiles.com/ugd/fa6f14_47cc5e665a044d1fa81da73459ff9588.pdf
    • https://static.usrfiles.com/ugd/1f2646_5f46091384324824859ab76df19a9d3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc5e5f82e5b640dd9381946428e05a81.pdf
    • https://static.usrfiles.com/ugd/b8c837_50520f0c62844294b3b4868086be4c3f.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c465caafb6245ab8528534a815fc2a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_499df2a4183c4540862eb77bcb453d1c.pdf
    • https://static.usrfiles.com/ugd/b8c837_874d9c6da6c144c6b21e727e9e793d03.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_off00005f6f.bin
76cbd85925c522d31f78f047a23c817f8dcf7c3bab9da67ecd454d395b480a7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6F 5328 bytes
font_01_sfnt_off000071b9.bin
13a73f944cc99b5e19f27f10e683aaf39a8b2b2b56bf8a6099ce026265b5add7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 14080 bytes

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