Malicious PDF — malware analysis report

Static analysis result for SHA-256 1de67f1fb897973d…

MALICIOUS

PDF

34.0 KB Created: 2020-08-24 02:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad8098094f778ca8d1a2b4b5bf5e3c10 SHA-1: 9095c9b0245d1e8adc11fe6617ef9b0600029082 SHA-256: 1de67f1fb897973d2ce037fa15ba5358a505edae94218a3f6948960245ae2a99
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.ru/pify?keyword=lagu+ab6ix+breathe+uyeshare' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and numerous other links pointing to external PDFs, suggesting a coordinated effort to distribute malicious content or phish users. No scripts were extracted from this sample.

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.ru/pify?keyword=lagu+ab6ix+breathe+uyeshare
    • http://buvexole.hometechrenovations.ca/uploads/1/3/0/8/130874426/vidaposaxip-lobuvor-tasatak.pdf
    • http://files.johnscofieldphotography.co.uk/uploads/1/3/1/4/131406211/dewef.pdf
    • http://files.alexandradeviveiros.com/uploads/1/3/1/0/131070331/7593914.pdf
    • http://bidobuxus.peterandpaulapixie.com/uploads/1/3/1/4/131454215/kuduj-lumataw-wenuxewud-bofixev.pdf
    • http://dowoj.mobotflexi.com/uploads/1/3/0/9/130969761/6430536.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/bangladesh_passport_reissue_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitadekekogog.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/95962052980.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/84175559116.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83300066175.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/julibavusuvufolov.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/4363614477.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/grick_dnd_5e.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/xulijowagazuboduk.pdf
    • https://cdn.shopify.com/s/files/1/0454/7008/9382/files/36674339796.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_off000047ba.bin
5714c460b69674c40137507b692a4a81fedca056065de483334ff64c77816791		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47BA 5320 bytes
font_01_sfnt_off000059d8.bin
42b1706050d59b68a9bcbf90a2ce7c3c550bc69d880d865e876bbdc6ab433e0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D8 9852 bytes

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