Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f37f7d09e86361…

MALICIOUS

PDF

77.9 KB Created: 2021-03-19 13:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da36be20e577817615f9016a1ed412f7 SHA-1: dff283a53f6c3489ac007a1fd758a5d77d20a9e5 SHA-256: 60f37f7d09e86361f0e9b9c084421c58b96d25be7669c89f4632c36c2874969b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'pelibifir.ru', which is likely a malicious domain used for phishing or distributing further malware. The document body, though heavily obfuscated, appears to contain keywords related to car service, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://pelibifir.ru/strik?utm_term=maserati+granturismo+2008+service+cost
    • https://cdn.sqhk.co/wixefawoz/gdLhDjj/doganewazibojijotixofiver.pdf
    • http://kifopelidito.mypressonline.com/56860446300.pdf
    • http://tiwujatujoput.mygamesonline.org/jopiwajap.pdf
    • http://mevesepegubisis.scienceontheweb.net/vetuxefuzewabixudigisasa.pdf
    • https://cdn.sqhk.co/lesasafo/hsjh3P5/warlords_of_new_york_all_hunter_mask.pdf
    • http://devivitonewe.sportsontheweb.net/52487153567.pdf
    • http://letaraluzim.scienceontheweb.net/72800837938.pdf
    • https://cdn.sqhk.co/simixejazir/vqicheb/73812770213.pdf
    • https://cdn.sqhk.co/padasagam/fAqgfRV/1743840433.pdf
    • http://manamuposa.getenjoyment.net/data_mining_techniques_for_associations_clustering_and_classification.pdf
    • http://werikipirojenob.scienceontheweb.net/mazodapunelizagudo.pdf
    • http://detozube.scienceontheweb.net/introduction_to_fourier_analysis_morrison.pdf
    • http://fejukoturig.medianewsonline.com/wemajozaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pikubub.onlinewebshop.net/how_do_you_pair_qcy_earbuds.pdf
    • https://s3.amazonaws.com/jevedijadiki/logotype_brand_guidelines.pdf
    • https://s3.amazonaws.com/nilafafakem/storm_front_snow_goose_decoys.pdf
    • https://s3.amazonaws.com/jujadodedaruxix/4094622518.pdf
    • https://s3.amazonaws.com/fakuguvil/43905261452.pdf
    • https://s3.amazonaws.com/mejigavukolu/what_is_drill_pay_for_national_guard.pdf
    • https://s3.amazonaws.com/nafoxuda/lodefisonabopepupagaj.pdf
    • https://s3.amazonaws.com/pegek/zupemivivinagi.pdf
    • https://s3.amazonaws.com/viwoxuz/thank_you_very_much_for_your_answer.pdf
    • https://s3.amazonaws.com/gavapozalilup/84682101980.pdf
    • https://s3.amazonaws.com/retobifulipo/datasheet_arduino_uno_atmega328.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_off0000eef3.bin
3a86867468e3075e997db1a6af1d1bdeba44d62d79b61a39c6125227c87acfc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 5620 bytes
font_01_sfnt_off00010212.bin
ced37881644021f88e056a2859f3ba798ecf58de1160c2f7f6c6c2776cd1eee1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10212 11292 bytes

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