Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e67b4eb22bde1d0…

MALICIOUS

PDF

84.8 KB Created: 2021-04-09 22:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57c54a023a91a3c53281322316897cd2 SHA-1: aec824e05cfa4ace68e52ecd87590df46ee8f964 SHA-256: 2e67b4eb22bde1d01eaf44cd5fc6d3ecea36c74c2f1e84736195a51ca68c06bb
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a phishing page, as indicated by the ClamAV detection and ML classifier. The document body, though heavily obfuscated, suggests a lure related to cracking a safe, likely to entice users to click the malicious link. No scripts were extracted, but the presence of external URIs and the high confidence malicious verdict point to a phishing campaign.

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://ponafet.ru/strik?utm_term=how+to+crack+my+sentry+safe
    • http://tamasolesodaj.mypressonline.com/biseguwekekepikemiza.pdf
    • https://cdn-cms.f-static.net/uploads/4424682/normal_604328c0841f1.pdf
    • https://cdn-cms.f-static.net/uploads/4444644/normal_605b3683701f7.pdf
    • https://somotudodij.weebly.com/uploads/1/3/4/6/134699902/japam_wifokekawaj.pdf
    • https://wozavosasegug.weebly.com/uploads/1/3/4/5/134509229/mepekumowi_kepubixa.pdf
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/8353349.pdf
    • http://xumupizaxuto.scienceontheweb.net/23356376392.pdf
    • http://wumewil.sportsontheweb.net/77064849886.pdf
    • https://static.s123-cdn-static.com/uploads/4371800/normal_5ff0206670450.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6e01a5db-200c-480f-b82c-af2162c88651/81453385382.pdf
    • https://uploads.strikinglycdn.com/files/b6fd3362-6a35-4ae3-85e6-fb2d7a77b817/trio_stealth_g5_7.pdf
    • https://s3.amazonaws.com/galinikagopit/jusidub.pdf
    • https://s3.amazonaws.com/wupixufekijax/ue_boom_2_mit_macbook_pro_verbinden.pdf
    • https://uploads.strikinglycdn.com/files/362f06c7-c080-4f2b-8fbc-8ff5697f6962/how_to_start_a_bereavement_support_group.pdf
    • https://uploads.strikinglycdn.com/files/fb85f15c-ebfd-4beb-a5aa-3307d2f39dec/14250610087.pdf
    • http://zonafikepejese.onlinewebshop.net/ikea_bed_frame_with_2_storage_boxes.pdf
    • https://uploads.strikinglycdn.com/files/d0832bd8-b8ce-42ca-be92-515cadf5f8bc/how_to_cite_a_case_study_in_apa_format.pdf
    • https://s3.amazonaws.com/gajabedafot/54797455344.pdf
    • https://s3.amazonaws.com/bitizopovopaso/72992834373.pdf
    • https://s3.amazonaws.com/fopalew/atualizar_gps_garmin_nuvi_255w_gratis.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_off00010aba.bin
9cf45aa009d71218d907d4f9fb5b0461dcf209abd48ba991650dd92a56e38efc
pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABA 5212 bytes
font_01_sfnt_off00011c7a.bin
9e74fefd03843472dc13de02cc374962607d61eb6ab8cafbe32493d8b1003f65
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7A 11788 bytes