Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87f4eca993cd514…

MALICIOUS

PDF

72.7 KB Created: 2021-04-21 03:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8990fb3fe054422077de9ed53c623395 SHA-1: 74b7666cab5eeeff88710767d8b13f9bf2bc70d0 SHA-256: e87f4eca993cd514e07c5232e2f0aeafb548c3d19839472a42dace302f541c8b
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to various domains, many of which are associated with link farms and disposable hosting, indicating a phishing or scam campaign. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7860

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xajibur.ru/strik?utm_term=how+to+explain+bar+chart+data
    • http://erogan-oficial.site/lg_fridge_service_centre_in_coimbatoreomkda.pdf
    • https://nalokulomegeze.weebly.com/uploads/1/3/4/7/134758193/3010587.pdf
    • https://cdn.sqhk.co/rubalibuzodi/hfgighW/journey_map_template.pdf
    • https://cdn-cms.f-static.net/uploads/4448103/normal_60469bc311a76.pdf
    • http://terem.space/97795738194zlmvb.pdf
    • http://gtomishebs.xyz/80118056419ctmw.pdf
    • http://load-bcp.com/dsc_1832_programming_softwarejt3yo.pdf
    • http://reduslimitalia-oficial.site/simply_keto_simple_recipes_with_ground_beefwz3qx.pdf
    • https://cdn.sqhk.co/vidujubotaf/rfdjgii/baby_doll_girl_pic.pdf
    • https://static.s123-cdn-static.com/uploads/4384318/normal_5fc6d46075ea1.pdf
    • http://jumpfs.space/finding_dory_full_moviez3c4v.pdf
    • http://osmosiotzs.fun/how_much_do_graphic_designers_charge_for_a_flyerf7dav.pdf
    • http://levantegroup.net/how_to_power_pressure_cooker_xl2sm4r.pdf
    • https://vopukuno.weebly.com/uploads/1/3/1/3/131383764/3142036.pdf
    • https://static.s123-cdn-static.com/uploads/4484365/normal_5fe544c739a07.pdf
    • http://lynciguest.com/631992731678mvi0.pdf
    • https://rebumazezip.weebly.com/uploads/1/3/4/8/134860465/bebetimozu-gamoguvadew-donufudeveved-nanazivisutek.pdf
    • http://vashobereg.com/angels_touch_care_assisted_living5pxtw.pdf
    • http://wide-mean.top/1139688828coklo.pdf
    • https://static.s123-cdn-static.com/uploads/4365636/normal_5ff018a564ee2.pdf
    • https://cdn-cms.f-static.net/uploads/4378404/normal_6033619a6d7ca.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f492.bin
5e5edcc2adf4c3d7fe6792eb9fd20363f5dd885fbc39af1f0ea04c7b9cd935c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 5244 bytes