Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e87f3f79595e07c…

MALICIOUS

PDF

53.2 KB Created: 2020-08-14 18:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6028b61624ad181b746a9e731a188da5 SHA-1: cc787e4463cb6f6b8e06369c28e60bd7930b0ae0 SHA-256: 9e87f3f79595e07cdf571bbf9440ec0af91385db7e41648e0098eefcaf0296fc
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, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'Celtic font free' download. The PDF also contains a large number of embedded links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The primary attack vector is likely social engineering via a deceptive link.

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.com/pify?keyword=celtic+font++free
    • http://files.981themarcoislandfm.com/uploads/1/3/0/9/130968984/9790a2b6e0.pdf
    • http://gitame.tenniswos.co.uk/uploads/1/3/0/8/130874493/dakog-xatemibexulu.pdf
    • http://files.replenishnaturalhealth.com/uploads/1/3/0/7/130738513/tipafawi_zewosirir_fazujudolidowuf.pdf
    • http://basar.aprilfairbrother.com/uploads/1/3/1/4/131482992/b8a1b19d42e949.pdf
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/zanijevaxepuvami.pdf
    • https://cdn.shopify.com/s/files/1/0435/4516/5976/files/siwelumezamamujir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zizamazigunonafimav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32686583269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0437/9276/0981/files/kawaii_tarot.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8679/files/99976308098.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/ancient_rome_colosseum_information.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/rigovitofe.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/26821203279.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/bemoxogopasadip.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007981.bin
0aec2ea743d444a5cc7b5ac0f0b806588372af5dd903f457effea665b39ac856
pdf-font-stream PDF embedded font (sfnt) at offset 0x7981 4392 bytes
font_01_sfnt_off00008876.bin
3f405caea5385ec1b5b3609f93695537cff66aa8422bc322ac4d6e01f2992b72
pdf-font-stream PDF embedded font (sfnt) at offset 0x8876 14084 bytes
font_02_sfnt_off0000b2b6.bin
39ec56239dfbadaf1152f352425373198320bbf04611a9bdd20f934da35849a3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B6 16180 bytes