Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1f1e52a33d2bd67…

MALICIOUS

PDF

44.5 KB Created: 2020-08-22 06:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7823ddef6d35a62a569782ba8a5ab1d5 SHA-1: 0f517ac97fee44c87b4e5369cf393bf27ed98d97 SHA-256: c1f1e52a33d2bd673f29ce3813631560420a4f05d78cde6c829033ce85c3e9a6
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with text suggesting it is a video compressor application. The presence of a visible LOLBin command execution instruction indicates potential for further malicious activity. The document body itself is heavily obfuscated but contains the malicious URL and references to the application lure.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=video+compressor+app++for+pc
    • http://tadoneru.whiteplainslodge.org/uploads/1/3/2/8/132816042/2363122.pdf
    • http://files.artemisiaherbals.net/uploads/1/3/0/7/130740524/lepunuso.pdf
    • http://files.volunteerfirefightersassociationoklahoma.org/uploads/1/3/1/4/131437685/talapepurunekap.pdf
    • https://cdn.shopify.com/s/files/1/0429/5226/1795/files/38721511795.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/17195701630.pdf
    • https://cdn.shopify.com/s/files/1/0433/3194/4602/files/negevojijebaduforewimivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/fimifobirikudigepibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/vojulerides.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/catch_wrestling_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zijilo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2046/7869/files/52695910421.pdf
    • https://cdn.shopify.com/s/files/1/0433/6438/4927/files/battle_royale_manga_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3141/files/60873776104.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_off00006fcd.bin
1f3c6bb9d1602a8b9654590d76c42839063fa5bffa0f600802849cf59884b4aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCD 5236 bytes
font_01_sfnt_off00008182.bin
ae98d62bf755ee483d413215f062a83abd162fbeed9f08344b8226230e231213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8182 10580 bytes

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