Malicious PDF — malware analysis report

Static analysis result for SHA-256 87fdbd6c6238d667…

MALICIOUS

PDF

74.0 KB Created: 2020-07-28 07:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ed171bf49e009db1c8cd825308abce SHA-1: 86176ab01813727352e866790108f37e83ecd1bd SHA-256: 87fdbd6c6238d667ca798e5685af68aa7046de815a290ef88aee3b80044ba636
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests an invoice or payment context, aligning with the 'SE_INVOICE_LURE' heuristic. The primary malicious link leads to 'ttraff.cc', a known redirector, likely to obscure the final destination of the attack. The PDF also hosts a large number of other PDF files on Shopify domains, potentially for SEO manipulation or to host further payloads.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.cc/pify?keyword=acquittance+register+format
    • http://files.whatwouldateacherdo.com/uploads/1/3/1/4/131454238/3e653d2cf4.pdf
    • http://files.trebor-ts.com/uploads/1/3/1/8/131871690/4fa93.pdf
    • http://files.trancityevent.com/uploads/1/3/1/1/131163777/4133409.pdf
    • http://files.ninelivestwine.com/uploads/1/3/0/8/130874629/vezik_gunefitotokek.pdf
    • http://files.ninelivestwi
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/bizawewojebujur.pdf
    • https://cdn.shopify.com/s/files/1/0435/4477/2759/files/zonorelugoxetezex.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/43821811504.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/sogubesusawevodizabijim.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/25768880301.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/tuwemirupizopadibi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/3245107089.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5082/files/begofexakopabule.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/nifamekapovavukepaxemome.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/4425004111.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/47455577025.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/wukiraxetevereponure.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_off0000e484.bin
59c35d982cc7d64910cb82b46d992be9b24b11198c1585ade3355a0c972597a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE484 5164 bytes
font_01_sfnt_off0000f5fd.bin
3ab283a4e0682fa1386a08bc0b278151cab260be0bc0aa84b01fca1d5664284b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FD 11488 bytes