Malicious PDF — malware analysis report

Static analysis result for SHA-256 d61fceda94bb2514…

MALICIOUS

PDF

77.5 KB Created: 2021-04-10 17:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ae5e0ca1a3f3ffb2d9a90f8927b2bfc SHA-1: 4326a6e9d74966afd053fe67d247b8ca77cced4f SHA-256: d61fceda94bb25145f59f63ddce3a218205be6631c9a17e2548e34a3f26ddaa3
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a malicious domain, likely to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by masquerading as helpful 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://jumiwimov.ru/strik?utm_term=how+to+develop+a+relapse+prevention+plan
    • https://bilugejedegigel.weebly.com/uploads/1/3/4/0/134017605/ravudejefa.pdf
    • https://cdn.sqhk.co/moxelutedoje/EgdhbRe/kirkey_road_race_seat_cover.pdf
    • http://difipalilif.scienceontheweb.net/kt_tape_tennis_elbow.pdf
    • https://cdn.sqhk.co/fulaxanew/cQRxjcT/free_printable_english_grammar_worksheets_for_grade_8.pdf
    • http://dusibarupuguli.medianewsonline.com/xitizaxo.pdf
    • https://wufirojotuxo.weebly.com/uploads/1/3/1/3/131398242/sovuwudilogazab.pdf
    • http://goladelexugezi.sportsontheweb.net/vitexigepuk.pdf
    • https://cdn.sqhk.co/panafilaputu/qZmhjhh/unicorn_photo_props_printable.pdf
    • https://cdn.sqhk.co/rozamulev/YjdLaif/danizajijovanodasete.pdf
    • http://rejorevubirobu.sportsontheweb.net/fifowupisotama.pdf
    • http://fuxisileza.mywebcommunity.org/zepapon.pdf
    • http://bowuvudofi.scienceontheweb.net/59285563038.pdf
    • http://seweripuwas.mywebcommunity.org/solutesa.pdf
    • https://cdn-cms.f-static.net/uploads/4501501/normal_603343679a1b1.pdf
    • https://cdn-cms.f-static.net/uploads/4370275/normal_605ee689b9873.pdf
    • https://cdn.sqhk.co/xibetevoxaj/ggeZ9ph/crazy_falling_balloons.pdf
    • https://cdn-cms.f-static.net/uploads/4446380/normal_602a403b9395c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fa5062c7-47d7-4bf1-8159-7ff35494d0fb/23446379115.pdf
    • https://uploads.strikinglycdn.com/files/8fb044db-c2ab-4a28-80d0-06e4530f39ae/33812621276.pdf
    • https://uploads.strikinglycdn.com/files/7fe9c1d9-fb33-4a1e-9ab7-979f3977a0c0/danofimotapa.pdf
    • https://uploads.strikinglycdn.com/files/f8fb6b85-f644-417a-bd75-11feb5a1c6e7/what_star_is_coming_out_on_december_21st.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_off0000f407.bin
ddc8b0e8b456c2c03f4a8b36b61289ae79d217d78218c1561fe435b5ca4f43ca
pdf-font-stream PDF embedded font (sfnt) at offset 0xF407 5068 bytes
font_01_sfnt_off00010563.bin
f07df396f9b7ae7dd81acbbb8378de3b8cbeae281efa11bc6b8d67e325e392d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x10563 10376 bytes