Malicious PDF — malware analysis report

Static analysis result for SHA-256 b64e9715d356f116…

MALICIOUS

PDF

39.1 KB Created: 2020-08-12 06:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72847b4a5db0ca907c77138176c15822 SHA-1: c4ab38f34d2ece0fae4ff31991854b43055f07cd SHA-256: b64e9715d356f116a5d3b61416ada4e2a4a5ce2d689258cee80caa6ef4b5cf62
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a reference to a manual, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The primary malicious IOC is the redirector URL.

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.cc/wb?keyword=msi%20b450%20tomahawk%20max%20manual
    • http://files.finestwallpaper.com/uploads/1/3/2/3/132302824/4784585.pdf
    • http://files.irishmilersclub.org/uploads/1/3/1/3/131381237/bosumi_mifuz_vepapo.pdf
    • http://files.indyfertilitycare.com/uploads/1/3/1/3/131383771/terogikobiposom_pojal_natexedemit_salifis.pdf
    • http://files.uniquecelebrationspartiesandgifts.com/uploads/1/3/1/3/131380126/898df3af0cfb209.pdf
    • http://files.josiemusicawards.com/uploads/1/3/0/7/130740049/xatutopabugexoki.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/15968787237.pdf
    • https://cdn.shopify.com/s/files/1/0438/9309/6600/files/administrao_de_medicamentos_injetveis.pdf
    • https://cdn.shopify.com/s/files/1/0435/2878/1973/files/14570043834.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63545483179.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/63632876255.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/tumazoweturavorozitula.pdf
    • https://cdn.shopify.com/s/files/1/0436/3016/6176/files/70049384639.pdf
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/16717384544.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/anthropometry_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6449/files/xuvubonufimokenefeda.pdf
    • https://cdn.shopify.com/s/files/1/0434/3909/5973/files/sitoxapak.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/85589629240.pdf
    • https://cdn.shopify.com/s/files/1/0432/3360/7842/files/vukatuzadazefawuvade.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/xadudewabubozisomikifofi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/definition_of_mass_communication.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_off000059b8.bin
c325b9e69e41db6b9de9f29c410dab534654b80959541c6f2daaccbdd91a96d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x59B8 5552 bytes
font_01_sfnt_off00006c9c.bin
caff89692178fabf1a371ef0eba537b3bcf798f4f721b47b964ad68130d777f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9C 10032 bytes