Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed03336b0168855f…

MALICIOUS

PDF

79.8 KB Created: 2021-03-23 08:15:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91e87625dcd7ffc472cbaa838ab4ebd1 SHA-1: ea7fc78fe417dd6322b6e09175035e2522b56a52 SHA-256: ed03336b0168855f5b9b596501059c81931f4b024bb6b8a90343d9ff825056ae
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing. The primary URL, 'https://soxebez.ru/wix?keyword=google+drive+cats+don%2527t+dance', suggests a lure to a fake Google Drive page. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/wix?keyword=google+drive+cats+don%2527t+dance
    • https://cdn-cms.f-static.net/uploads/4489732/normal_5fe8f4c736c29.pdf
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/3595833.pdf
    • http://pexaxasub.iblogger.org/brand_new_day_kodaline_song.pdf
    • https://kawavaturitavo.weebly.com/uploads/1/3/5/3/135321378/78f7971bd.pdf
    • https://kasexesupa.weebly.com/uploads/1/3/1/4/131437862/441432.pdf
    • https://tudadakamoziv.weebly.com/uploads/1/3/4/5/134596668/monipoman_dofedogiwe_gosomaba.pdf
    • https://cdn-cms.f-static.net/uploads/4477626/normal_60433f102f610.pdf
    • https://cdn-cms.f-static.net/uploads/4377936/normal_6056ec5bdb2c7.pdf
    • http://zuxenegobepejij.22web.org/mejezufokiliwakudixodel.pdf
    • https://cdn-cms.f-static.net/uploads/4465136/normal_600ddde1ce87a.pdf
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/2b759777a74.pdf
    • https://cdn-cms.f-static.net/uploads/4370051/normal_6050e745a53d2.pdf
    • https://static.s123-cdn-static.com/uploads/4378848/normal_5ffdd4e7b06e3.pdf
    • https://cdn-cms.f-static.net/uploads/4394073/normal_603cc14016206.pdf
    • https://cdn-cms.f-static.net/uploads/4468294/normal_604665f823190.pdf
    • https://cdn-cms.f-static.net/uploads/4403563/normal_6026d38965e32.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://a7176590-a44a-43b4-8b25-1171fb6190ac.filesusr.com/ugd/e6ccb8_a92ae5a640d649639b4d44680d2fd6c7.pdf?index=true
    • http://wosidekole.rf.gd/59700726381.pdf
    • https://a909b8fe-7c6e-4467-a5b6-92e64a2a5b5d.filesusr.com/ugd/65efca_ab3a00563b9c40ce8695ab2705fe8eb6.pdf?index=true
    • https://1c8fadd7-09eb-4d2b-9d42-8e747ba5ce52.filesusr.com/ugd/60625b_0e17d727b64b4c68855f0339eab4f538.pdf?index=true
    • https://s3.amazonaws.com/gavexilatuvitaz/56570102988.pdf
    • https://s3.amazonaws.com/kotidox/16937923532.pdf
    • http://mojipanitupawo.rf.gd/likikepovozatafaxijika.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbfe.bin
b7b7869bf4ff91e24358ccd75145177338e11bb01016cdec190cfb09f7355bb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFE 5232 bytes
font_01_sfnt_off00010de9.bin
c7190bf59e8c2d52ca66e38fcd4ccf8711f62f5def036f2767cb8fdcee3fecde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE9 10504 bytes

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