Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3b7460bfb2c662…

MALICIOUS

PDF

40.6 KB Created: 2020-08-30 22:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89e21d032a47eef13b0dce8e55f09af1 SHA-1: 4e1eab61c98383d76895e6951bb353fba1ea42b1 SHA-256: ae3b7460bfb2c6629ca64179eb42c85ea91a9db2937de68f828f32ca7834483b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to a URL disguised as a vehicle owner's manual. The document body, though heavily obfuscated, contains text fragments that reinforce this lure. The presence of numerous embedded links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate malicious destination. The primary malicious IOC is the redirector URL.

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.cc/wix?keyword=2018+chevy+cruze+diesel+owners+manual
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/gafixuvatara.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8223/files/29399296400.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/49167365153.pdf
    • https://cdn.shopify.com/s/files/1/0433/5091/7269/files/fujamuzigobupajij.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/28353526142.pdf
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/dudidekom.pdf
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/22604569932.pdf
    • https://cdn.shopify.com/s/files/1/0434/1615/8359/files/kumetaxezomaxasalubigaju.pdf
    • https://cdn.shopify.com/s/files/1/0436/9727/5033/files/13978567095.pdf
    • https://cdn.shopify.com/s/files/1/0441/1562/4088/files/tom_and_jerry_cartoon_movie_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0456/4808/5159/files/life_after_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/zumex.pdf
    • https://cdn.shopify.com/s/files/1/0461/4242/3193/files/dosejogajizadilapanobako.pdf
    • https://cdn.shopify.com/s/files/1/0429/1064/6435/files/7994298947.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/12460726152.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/
    • https://cdn.shopify.com/s/files/1/04

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f8a.bin
3ca0cf97431a89d14eff0ea390304f4ac3df8817d0936e8051b2d57ff430aa8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8A 5908 bytes
font_01_sfnt_off00007390.bin
966453e4ee3066740dc2b7a7b4441eee8e52c2924198fea7dcf742e45e49db92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7390 9900 bytes

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