Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ad026adda706d4…

MALICIOUS

PDF

33.7 KB Created: 2020-08-09 07:28:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a154a785b5afb409b59c82d3ec6324bf SHA-1: d61faaf732b40542a31029676d71938a77e34633 SHA-256: a0ad026adda706d4d784f6d46d4532b24aa9f316cd610d44669ee116f55564fa
150 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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the redirector URL and appears to be a lure related to a car brochure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=brochure+pdf+renault+kadjar
    • http://jigavon.allenlightshow.com/uploads/1/3/1/6/131606289/4831229.pdf
    • http://biredakar.theolivegrovecmc.com/uploads/1/3/1/0/131070450/cdf3573.pdf
    • http://files.jaibaidell.com/uploads/1/3/1/3/131383977/9e43b4d83f782b.pdf
    • https://cdn.shopify.com/s/files/1/0436/0319/8116/files/xigezuxovikali.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/xobutemapofufubatodujumex.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/93001837065.pdf
    • https://cdn.shopify.com/s/files/1/0434/7586/1656/files/8213709662.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/kubinupojol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/vokenijusesiliw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9481/9484/files/10522471814.pdf
    • https://cdn.shopify.com/s/files/1/0431/7655/8746/files/somemafiriveza.pdf
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/72069302132.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_off00004603.bin
6f348c0cde3d41109a9d46be16540bd25226b47fa62079063c9f2400ff387fa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4603 5256 bytes
font_01_sfnt_off000057de.bin
6f6a8233aee622682d400ad50941cc7d0a9ca37e63ec4588c8740566c69608af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57DE 10036 bytes

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