Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f32831c48053678…

MALICIOUS

PDF

70.9 KB Created: 2021-03-20 11:33:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f091bcbc2502018f1bb1c325e2171ff SHA-1: 65b69a966a0134a088e62598cf8d2d021a90250e SHA-256: 0f32831c48053678b83319e3fb1b601b7a62f6ef404046f1f7c7c293de3b8498
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with a primary suspicious URL pointing to 'soxebez.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates the document is designed to host a large number of external links, likely for SEO manipulation or to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9596

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://soxebez.ru/award?keyword=les+ataxies+pdf
    • http://tegor.xyz/wupelabalewibipzjwy.pdf
    • http://lojasamericanasbr.com/all_bruce_lee_movies_rankedk2ou2.pdf
    • http://probmaka.tech/werujadoifm47.pdf
    • https://gagoxesuv.weebly.com/uploads/1/3/2/6/132681450/gabukijagu.pdf
    • https://venewosusi.weebly.com/uploads/1/3/1/3/131398385/409bde73454762.pdf
    • http://amsidisi.xyz/fosokibixemiraf8lgx7.pdf
    • http://sale50.pro/pedals_to_use_with_hx_stomp5rbu0.pdf
    • https://cdn-cms.f-static.net/uploads/4468831/normal_600be539d6bdd.pdf
    • http://juilopkiretlo.ru/what_is_your_strength_quotese6vyn.pdf
    • https://mutikotamibe.weebly.com/uploads/1/3/0/8/130874320/5160495.pdf
    • https://static.s123-cdn-static.com/uploads/4461483/normal_5fe4f2ca306f8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e82c417b-9f95-4937-a00f-0fd510aa25a7/66086664704.pdf
    • https://uploads.strikinglycdn.com/files/1998b630-7f6d-4220-b8f4-db6299ee603d/wolirarufebawida.pdf
    • https://uploads.strikinglycdn.com/files/1f3d7f48-d788-44d3-99fe-c6e106e104f4/77014065183.pdf
    • https://uploads.strikinglycdn.com/files/9bc76695-bdfa-4b7e-8e5b-3b4db35dcbd8/72396402128.pdf
    • https://uploads.strikinglycdn.com/files/7689b5d7-ce79-4eee-b9bd-9b29a1034dfa/how_to_find_liters_at_stp.pdf
    • https://uploads.strikinglycdn.com/files/0c053018-dac4-4727-ab17-8f129d96f5a7/chattanooga_hydrocollator_m-2_mobile_heating_unit.pdf
    • https://uploads.strikinglycdn.com/files/950ff505-758e-4cbe-8ca2-0b8dc8d403fd/78005887261.pdf
    • https://uploads.strikinglycdn.com/files/c2317c12-5e73-46fd-a508-2d42a2ef1cc2/8807500314.pdf
    • https://uploads.strikinglycdn.com/files/84a7e994-0618-4854-a307-8cd1cebe836e/hp_5520_printer_support.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f62b.bin
91af38a810d04f8e03173c795bf9a95b957588d5a210bb025fba0bae5bfec035
pdf-font-stream PDF embedded font (sfnt) at offset 0xF62B 4916 bytes