Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f3b1f04c07e76ce…

MALICIOUS

PDF

77.9 KB Created: 2021-03-14 02:52:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4fc0c7c7c5766e50e85cdc55cf0c4b78 SHA-1: 554d34ff95f932d34b34f213ddf9365648701dee SHA-256: 0f3b1f04c07e76ce8289cd61135e3c588b4f4e5c6ad6c4058cacbf4ffc47da8a
186 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The primary lure appears to be related to 'World of Tanks Blitz free gold hack', suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and extensive link farm indicate an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://kuzutuzo.ru/wix?keyword=world+of+tanks+blitz+free+gold+hack+no+survey PDF link annotation
    • https://devigejijakefu.weebly.com/uploads/1/3/2/7/132740662/jokosut.pdfIn PDF document text
    • http://torevifij.iblogger.org/d_i_a_s_m_full_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416151/normal_5fd990b58d6ff.pdfIn PDF document text
    • https://jetisinodab.weebly.com/uploads/1/3/5/3/135335938/75b719d6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369487/normal_5feec01e48c4a.pdfIn PDF document text
    • http://venameripuna.22web.org/autocad_2000_lt_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_60333df3ebf4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_600d04356fbdd.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/5755470.pdfIn PDF document text
    • https://jedawakebikota.weebly.com/uploads/1/3/4/7/134715316/3fd5f20032.pdfIn PDF document text
    • http://fatukawudel.iblogger.org/lavebuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_604b05e75a386.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414153/normal_60049a3c0800c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_6042d4e4e6d67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477635/normal_5fccbfee99b1b.pdfIn PDF document text
    • https://fepaxumezo.weebly.com/uploads/1/3/4/3/134320712/josedodaso-mokanano-kizivifewu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_7f729650889a432494b0ec5a146cb675.pdf?index=trueIn PDF document text
    • http://zatafefot.rf.gd/10251721919.pdfIn PDF document text
    • https://4e4301d6-cc9a-4939-960a-6b497c1efea6.filesusr.com/ugd/d78803_eb6cc4d187394a009d876e681e8716b1.pdf?index=trueIn PDF document text
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_5b0b518a4036479a8a3416e049b6dbe8.pdf?index=trueIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_c9a266f4e4a7444ea4ca12305082b229.pdf?index=trueIn PDF document text
    • http://rupevisa.epizy.com/krishna_bhajan_hd_video_free.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_8bfd61adc49245269bea4bd9de1776bd.pdf?index=trueIn PDF document text
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_800f3fddfa0144f89eb1235e3b7a3478.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE3 5712 bytes
SHA-256: aa15d9faf567b1ffcab7a272dac3d70dfb3b92ffaf2b9137159e9a59929dbafd
font_01_sfnt_off00010371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10371 11352 bytes
SHA-256: 84b9e41bc1575b8b9446dc74db9c65ed0fe263b069d8745e17ed34fa68484761