Malicious PDF — malware analysis report

Static analysis result for SHA-256 235235f990c94874…

MALICIOUS

PDF

42.5 KB Created: 2020-08-14 07:27:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8673044e2e5181c8c344a78b1c8595a6 SHA-1: 4ae6323919a98c95959de643e436dcaba7ef2b5b SHA-256: 235235f990c948740ccfad950a41086aac0a229568c079711b8871c2e3b69964
120 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 links, many hosted on Shopify. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=adventure+island+4+gba', suggesting a lure related to a game. The combination of a malicious redirector and a link farm indicates an attempt to drive traffic to potentially malicious sites.

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=adventure+island+4+gba
    • http://files.williamkelliott.com/uploads/1/3/1/3/131398008/ccfa55.pdf
    • http://xesefuj.onthespotjackson.com/uploads/1/3/1/4/131454012/fifufilozimil.pdf
    • http://files.vov-gaming.com/uploads/1/3/0/7/130740190/2fdbb70.pdf
    • http://sipuk.indigoeventservices.com/uploads/1/3/1/3/131383483/1cdbb278.pdf
    • http://siwex.tristatebengals.com/uploads/1/3/1/3/131383908/fekotilut.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/duretawofivedokupalojomil.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/42910963708.pdf
    • https://cdn.shopify.com/s/files/1/0440/1260/1502/files/wewisomanigoxup.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/knight_rider_apps.pdf
    • https://cdn.shopify.com/s/files/1/0435/9490/7810/files/juzurupika.pdf
    • https://cdn.shopify.com/s/files/1/0430/2202/4867/files/48465054433.pdf
    • https://cdn.shopify.com/s/files/1/0429/2060/7900/files/90711578586.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/gikigejewabegowizumoxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6955/4340/files/belajar_bahasa_inggris.pdf
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/la_vie_en_rose_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/nobowerinaxedi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/63890175219.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_off00006850.bin
a462cfd91f6454d48276d74ca023e709a9ac4587e628c9546f841b914ff81f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6850 5268 bytes
font_01_sfnt_off00007a46.bin
6dddad57a3ee24a383c3e2e3997f3a97f434511da8342e0b84778b6a998220bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A46 10304 bytes

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