Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5af7e75365e7e2…

MALICIOUS

PDF

76.0 KB Created: 2021-04-08 06:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a155d16a53dab7179f13089f45f77026 SHA-1: 4ea6199ae3084cc29d841e9ede0d78b8aaad2944 SHA-256: dc5af7e75365e7e2863daf8f0f6769057e65725293bc53d45379e8a972ff1d0a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that mimics a Google Maps search, likely intended to trick the user into clicking it. The PDF structure and embedded content suggest it's designed to deliver a malicious payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/strik?utm_term=google+maps+florida+directions
    • https://cdn.sqhk.co/nexoratuxi/Ttiakig/retrovirus_examples_in_humans.pdf
    • http://pirojibanenuzi.getenjoyment.net/tozujoso.pdf
    • http://vigirorimikana.medianewsonline.com/minigosefazofinisuwikokan.pdf
    • https://cdn.sqhk.co/ratevusur/gC1gjzf/jikemorupilebufeweved.pdf
    • https://cdn.sqhk.co/kubepugemaki/hdz8Rhe/umc_zorgverzekering_contact.pdf
    • http://nutosuvitiraj.scienceontheweb.net/7579109782.pdf
    • https://dibodowe.weebly.com/uploads/1/3/4/6/134686502/jalobel.pdf
    • http://retamos.mygamesonline.org/kuzikadovokunibatozip.pdf
    • http://nasporte1.fun/spider-man_2099_comics_read_online7uhww.pdf
    • http://telewapor.22web.org/77151388668.pdf
    • http://wigoxusopipevur.iblogger.org/68991435281.pdf
    • http://fejiximodanu.mygamesonline.org/avocado_oil_extraction.pdf
    • http://fb-ig-violation.com/how_many_odd_red_cards_are_in_a_deck_of_cardsxj8gy.pdf
    • https://nogapixefakul.weebly.com/uploads/1/3/4/5/134590999/3adec800d32.pdf
    • https://ganunosor.weebly.com/uploads/1/3/0/8/130814229/luxamarizu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cbce4828-0bfd-47ef-96f0-4619cb4d4b14/stephen_king_langoliers_streaming.pdf
    • http://kesotufujurox.rf.gd/house_rent_agreement_sample.pdf
    • https://uploads.strikinglycdn.com/files/ea0bbe37-7d2d-4b6c-aa57-ffe6078c2370/biwuxowotinavul.pdf
    • https://uploads.strikinglycdn.com/files/334cdd90-a712-4b79-b61b-207a8998cefb/38163920620.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_off0000e99c.bin
e397be0dfeaa3a7711694198ee2305065be6b8de7ad422341ee2716806affe6e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE99C 5508 bytes
font_01_sfnt_off0000fc42.bin
ca7910ddb9875a6c3e0e9a21eb11dbf235159b28c71a9923aa3cab61f5a83e48
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC42 11352 bytes