Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e0c5d08e3ffbe12…

MALICIOUS

PDF

75.6 KB Created: 2020-07-24 21:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e7dbd15c75f9ef4b589221bfe858d9 SHA-1: f440e4ac432c5401e524fbecfae375c836b5467b SHA-256: 8e0c5d08e3ffbe1256556e73484ad159c3a61d89ebcf40cc0a029e512ea94b7d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of the primary links directs to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to CSS, suggesting a lure to trick users into clicking the malicious links.

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/pify?keyword=bootstrap+form+error+message+css
    • http://files.stickemupracks.ca/uploads/1/3/1/1/131163867/gotunugodise_dubewawaloxav.pdf
    • http://files.signaturegames.eu/uploads/1/3/1/4/131409709/ziguku_tubufaliz.pdf
    • http://files.gofmtogo.com/uploads/1/3/1/3/131398380/bonerulam.pdf
    • http://files.sugarinthegourdband.com/uploads/1/3/1/4/131452935/sodefomipowod-jebivel-vixolumumejeb.pdf
    • https://cdn.shopify.com/s/files/1/0439/8202/8958/files/rexete.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/nizugawojuto.pdf
    • https://cdn.shopify.com/s/files/1/0428/9953/8087/files/niniwane.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/panofagokeba.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/xarow.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/vowunixixajajikiti.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/wumep.pdf
    • https://cdn.shopify.com/s/files/1/0431/6413/9669/files/8829647545.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0173/files/72202156016.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/56229159200.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/16809888657.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_off0000d733.bin
d8e0bf39f067fad7ba9bc589186a78695a8448829e3e1c5e71255b57362c2562		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD733 4988 bytes
font_01_sfnt_off0000e831.bin
89792da6a1b1ffb44dec2d7b9285b94f99e9f9d7452d580fe74b18a878aaf9aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE831 17432 bytes

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