Malicious PDF — malware analysis report

Static analysis result for SHA-256 5042418856417e22…

MALICIOUS

PDF

76.4 KB Created: 2021-04-04 10:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f588741fb3da67e15992ec01405fbb97 SHA-1: a5815a230a34d82293e49a1cc1c8f7d4c51d14af SHA-256: 5042418856417e22babeb7b0d1af03b3de46b5df915ac2c5d1ea8592af0cadad
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a domain that appears to be part of a phishing or scam campaign, disguised as information about truck driving school costs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site or download further payloads.

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://dafemum.ru/strik?utm_term=how+much+does+roadmaster+truck+driving+school+cost
    • https://cdn.sqhk.co/tipusuzog/ohaJgmU/100_pic_quiz_shadows.pdf
    • https://zunezazawegor.weebly.com/uploads/1/3/4/6/134665047/8506345.pdf
    • http://laxuribotu.iblogger.org/rowoluzozigu.pdf
    • http://nodefiw.medianewsonline.com/40088587398.pdf
    • https://cdn.sqhk.co/mukibusu/h0Kjbnc/lyrica_anderson_bad_hair_day_download.pdf
    • http://detomebokiv.iblogger.org/bajrangbali_photos_com.pdf
    • https://mivuwapirodi.weebly.com/uploads/1/3/2/6/132681474/26d57fdb152bc6b.pdf
    • http://samokex.sportsontheweb.net/jugexen.pdf
    • https://cdn.sqhk.co/lenubire/whdieus/57263011517.pdf
    • https://mafatuxaxi.weebly.com/uploads/1/3/1/3/131384293/5904043.pdf
    • https://cdn.sqhk.co/gagupibi/cjf2giZ/high_blood_pressure_reading_after_eating.pdf
    • https://cdn.sqhk.co/rarukaboz/ibhchgS/tinuxede.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sobibuxasegisun.rf.gd/99484831653.pdf
    • http://sapexamire.rf.gd/momoporofig.pdf
    • http://damowepoko.myartsonline.com/zenajewok.pdf
    • https://uploads.strikinglycdn.com/files/586fd7a0-bfa2-4e5f-b6c6-2fb49c1e3060/fidorikinufifuva.pdf
    • http://rumavajusugeg.rf.gd/metodos_anticonceptivos_definitivos.pdf
    • http://nivakegezotepa.rf.gd/veterinary_anatomy_coloring_book_download.pdf
    • https://uploads.strikinglycdn.com/files/0190a071-b0e4-429b-9f7f-02548adb0dd1/31931489599.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_off0000ea5f.bin
8c6536fb9fd66ef5bc1c585c02e671f3f6bd82de80016ddebea3bd58ff6cd977
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5F 5532 bytes
font_01_sfnt_off0000fd15.bin
f645f9ad4a490a48b2815f2e7b4287ce11327bba0ff327631ce7b52fcb1156b7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD15 11476 bytes