Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b72c186a4b0dfb…

MALICIOUS

PDF

78.7 KB Created: 2021-04-05 08:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b8489f1859ee9343881484a157c9c888 SHA-1: 0044727698743e8b09ae7f7d42912b02d83257b6 SHA-256: 70b72c186a4b0dfb75a5bc5b116ea5651b874acdee90cec152f5b14cc4531be1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'zajinet.ru', which is likely used to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users by luring them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://zajinet.ru/strik?utm_term=2013+dodge+avenger+se+v6+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485800/normal_5fef95f29c600.pdfIn PDF document text
    • http://kojibataruv.iblogger.org/adcraft_hot_dog_steamer_manual.pdfIn PDF document text
    • https://sofenoxadip.weebly.com/uploads/1/3/5/3/135325136/rapumidobija.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_605565588d566.pdfIn PDF document text
    • https://xezajorawelo.weebly.com/uploads/1/3/1/4/131408008/f35430a04672.pdfIn PDF document text
    • https://vokipokulolobu.weebly.com/uploads/1/3/4/0/134016984/kutotabubuka.pdfIn PDF document text
    • https://madugonado.weebly.com/uploads/1/3/2/8/132815119/5799582.pdfIn PDF document text
    • https://cdn.sqhk.co/jitolado/geGjeub/bowonovujenowo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457604/normal_5fff104e58728.pdfIn PDF document text
    • https://cdn.sqhk.co/jimevexir/ibk3jif/40279893399.pdfIn PDF document text
    • https://dopakujovifoba.weebly.com/uploads/1/3/0/7/130739833/3064720.pdfIn PDF document text
    • https://nudadisaxoge.weebly.com/uploads/1/3/4/0/134018155/1ec6c62.pdfIn PDF document text
    • https://sapobukemofox.weebly.com/uploads/1/3/5/9/135974899/859175.pdfIn PDF document text
    • https://cdn.sqhk.co/xamubana/0jdtria/juzeboj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/38720736534.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/aflatoon_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/xomipoxidipazoku.pdfIn PDF document text
    • http://satoposip.epizy.com/15182038634.pdfIn PDF document text
    • http://dezenaxo.rf.gd/aduana_de_cuba.pdfIn PDF document text
    • http://kumifeti.rf.gd/lomaraw.pdfIn PDF document text
    • http://kubuleg.rf.gd/lekuzibadapetinavebowo.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/free_equivalent_fractions_worksheets_for_third_grade.pdfIn 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_off0000f62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62B 5660 bytes
SHA-256: 1a47d5ed30cf48b14501c1fd455723680ef318dee4bcfcf34634bc43d4621256
font_01_sfnt_off00010992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10992 10608 bytes
SHA-256: ccce4131ee43357da4a9e3d1844d34d2e6f0508f487df2ed17388f60ed7c252b

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