Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba113a884e0cc4a…

MALICIOUS

PDF

78.7 KB Created: 2021-03-14 03:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13da5138ec8e010e313d766cfab35f48 SHA-1: b9455e5e7125a21f0a93fd514ee01c220a3b57c8 SHA-256: bba113a884e0cc4a1a64213f10fb34061d0dde2949ade9604adc9ce49f9fedba
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to car repair, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially a phishing page or a download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=how+to+fix+a+broken+car+thermostat
    • http://xufededubumavif.scienceontheweb.net/povet.pdf
    • https://cdn-cms.f-static.net/uploads/4490722/normal_6011e46603f31.pdf
    • http://bamefidev.mygamesonline.org/amitabha_ghosh_manufacturing_science.pdf
    • https://cdn.sqhk.co/tatudawo/fhehehf/xabuvu.pdf
    • https://static.s123-cdn-static.com/uploads/4387037/normal_5fcbd4e692fd7.pdf
    • https://cdn-cms.f-static.net/uploads/4485821/normal_5fd3356237a1d.pdf
    • https://static.s123-cdn-static.com/uploads/4464878/normal_5ff9d3628b757.pdf
    • https://cdn-cms.f-static.net/uploads/4375696/normal_600c9c211108f.pdf
    • https://cdn-cms.f-static.net/uploads/4387060/normal_6018be42db355.pdf
    • http://rikafitamedad.medianewsonline.com/gurifedonowuwufazi.pdf
    • https://cdn.sqhk.co/fukonovum/hjPihje/77928407386.pdf
    • https://cdn.sqhk.co/reriwoduriju/geJLHwG/57886866207.pdf
    • https://static.s123-cdn-static.com/uploads/4417652/normal_5fe3c3b6212ae.pdf
    • https://cdn.sqhk.co/webuzifinuno/JjiieG3/99137354939.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wamatasamegu/talking_tom_2_apk_uptodown.pdf
    • https://s3.amazonaws.com/vizegemawokaxe/45386935924.pdf
    • https://eac5c218-d238-408c-98a6-8ff0ecbb25fc.filesusr.com/ugd/b1277d_cff986a80101437f92bd9c1e477c1dc8.pdf?index=true
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_550f42a67f314ef1b3ef7cc0f00301b2.pdf?index=true
    • https://590703a0-be71-4d3c-a49f-17767d5969ef.filesusr.com/ugd/656c20_5a0323d67d7e46e39ce28b0794148f19.pdf?index=true
    • https://1b15a19f-c8c2-4d9d-8c2f-e97aa7ecfe2c.filesusr.com/ugd/eb6c48_22231a88b2344081abb2213159169731.pdf?index=true
    • https://s3.amazonaws.com/pegozegi/18397583417.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_off0000f67a.bin
87c777dd2d54ae7751c147438b3cdbdb5fa923e9c604d94791cfbc38e0025fe0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF67A 5412 bytes
font_01_sfnt_off000108d3.bin
24f03ee1a8e6212449a1d08240528c368c44a011f6f4e164eba51d7610f827ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x108D3 10724 bytes