Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb98781f443d68d7…

MALICIOUS

PDF

40.0 KB Created: 2020-08-23 10:18:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c999f946db69a175fd95a42eed93c893 SHA-1: f911d557432cd763257d8e0f91d7f8b592b44499 SHA-256: fb98781f443d68d7b1afc24b1ec1835cfd2cec7ac9012c5152b04678d4e0703c
168 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=mandate+form+lic'. Another heuristic indicates a payment redirection lure, suggesting the document's content is designed to trick users into making fraudulent financial transactions. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=mandate+form+lic
    • http://files.innerbalance.blog/uploads/1/3/1/6/131606011/semuxewale.pdf
    • http://files.drkatherinemasters.com/uploads/1/3/0/7/130738568/fogedux_vajebilutagorir_femifeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/9949/6351/files/gomedava.pdf
    • https://cdn.shopify.com/s/files/1/0429/9256/6435/files/28658844812.pdf
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/underworld_rise_of_the_lycans_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47184882359.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/reading_comprehension_worksheets_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/8022/8759/files/arfken_mathematical_methods_for_physicists_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/mowokitulon.pdf
    • https://cdn.shopify.com/s/files/1/0437/6133/6471/files/beginner_guide_to_investing.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/49389329152.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/design_and_analysis_of_algorithms_vtu_notes_mca.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/tadup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/68694661312.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_off00005fef.bin
f0b78ba661f8d029275be5e25a85850723c5d0be76302001ddc84f88bf308965
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEF 4992 bytes
font_01_sfnt_off000070d4.bin
22fd34011852ec94b774492c371ae98cbb3755e9803fa5a763681040f20daa48
pdf-font-stream PDF embedded font (sfnt) at offset 0x70D4 10192 bytes