Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce237bdc05b02b4e…

MALICIOUS

PDF

43.8 KB Created: 2020-08-31 01:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b925e46cacb635615ca2b7f79323482 SHA-1: db50bd9978024fb6712722945774c64f6b902811 SHA-256: ce237bdc05b02b4e831e1a7619ad6c8d8585ca97a87d0541e77f3ee01d720fa9
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 'https://ttraff.ru/wix?keyword=prosopagnosia+test+espa%25C3%25B1ol'. This URL is likely used to lure victims into clicking on a link that leads to malicious content or phishing pages. The document also contains a large number of embedded links to PDF files hosted on Shopify, which is indicative of a link farm, potentially for SEO poisoning or to obscure the true malicious destination. No scripts were extracted from this sample.

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/wix?keyword=prosopagnosia+test+espa%25C3%25B1ol
    • https://cdn.shopify.com/s/files/1/0433/7224/9251/files/grain_brain_food_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/muwexafap.pdf
    • https://cdn.shopify.com/s/files/1/0464/4981/9816/files/wivexoruxatagodumenamunuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/virasajufedesareto.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/xirijomopip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/73145715360.pdf
    • https://cdn.shopify.com/s/files/1/0463/1370/1533/files/tatiwoguvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/kuredeleloti.pdf
    • https://cdn.shopify.com/s/files/1/0434/3762/1404/files/98081713315.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2675/files/new_holland_c227_operators_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/jafagozesukire.pdf
    • https://static.usrfiles.com/ugd/a4d998_e5175574db774ba7905736f60a440549.pdf
    • https://static.usrfiles.com/ugd/cafc24_699e690f39424757965a32b089e57998.pdf
    • https://static.usrfiles.com/ugd/1decf9_95f3bde9067f48008785dc5a1493c818.pdf
    • https://static.usrfiles.com/ugd/01bc73_c230be6f553e4e5ba20fb0f3f18bd91f.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/
    • https://cdn.shopify.com/s/files/1/0430/3123/267

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a19.bin
837714e2b197f4affc79187afb2e720d7c20abcfcd8f55ff6367ad39dba18797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A19 5200 bytes
font_01_sfnt_off00007b90.bin
c0b9fed148031e31f46b9ac08a10472267a196c42440d4b9b0c6876c59248693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B90 10792 bytes

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