Malicious PDF — malware analysis report

Static analysis result for SHA-256 36143a9685648c4e…

MALICIOUS

PDF

90.9 KB Created: 2020-08-02 23:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d993060e6cb8fb2b5b487ab888836bb SHA-1: 3005185a0062736501a983c7e54e9f77b41d9746 SHA-256: 36143a9685648c4ef656f18582334d2624ebe9589b632d5e5dc653da82026b36
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=eu4+revolutionary+flags'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the lure. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=eu4+revolutionary+flags
    • http://files.mcmjanitorial.com/uploads/1/3/1/4/131406356/5b2cce2e6e7ba.pdf
    • http://files.geenatowne.com/uploads/1/3/1/3/131379312/binividifota.pdf
    • http://files.church633.com/uploads/1/3/1/0/131070500/9057803.pdf
    • http://guvodot.cronicanfarms.org/uploads/1/3/1/8/131856476/suzogitepas.pdf
    • http://files.sscpn.org/uploads/1/3/1/8/131857270/xikolisusuvuxemuzeni.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/mavuxiriral.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/desijedesefili.pdf
    • https://cdn.shopify.com/s/files/1/0436/4691/0624/files/magejuvikuretut.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/87671169271.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/25023200267.pdf
    • https://cdn.shopify.com/s/files/1/0429/9289/4115/files/miduwapidal.pdf
    • https://cdn.shopify.com/s/files/1/0430/0875/3827/files/202169441.pdf
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/xogenivumuvizezul.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/93503964022.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/vazabaxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0792/4635/files/luponikikepoweze.pdf
    • https://cdn.shopify.com/s/files/1/0431/6151/8231/files/tagitulasigoxonajizunak.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_off000126bc.bin
54bd4de0f393874439650471dfd46a05b958b83ffe9b5dfcc6460c7346b3f52a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126BC 5140 bytes
font_01_sfnt_off0001386a.bin
caa8a1bb1d15dfc3cb3a1936f3322fe2ec65c1c870a7d935b15a54c8e97628e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1386A 11508 bytes

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