Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7901c2fe1e820b5…

MALICIOUS

PDF

75.9 KB Created: 2021-03-29 22:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 421c5bad8932c7c9c89c4de2b8fff9b6 SHA-1: e14ffd8a390a24577b22dddc9407348a5f063fc5 SHA-256: b7901c2fe1e820b5901a0284e8adf2c3cd2b979302463a5b8730bbd028060b19
96 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to a URL that appears to be a lure for downloading drivers, likely to trick users into downloading malware. The document body, though partially corrupted, contains text related to drivers, reinforcing the phishing pretext.

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://ponafet.ru/aws?utm_term=dell+inspiron+n5010+lan+drivers+for+windows+7+64+bit
    • https://cdn.sqhk.co/xewafazuk/hDG8idl/free_video_creator_app_for_android.pdf
    • http://secret-empire.ru/video_editing_software_free_full_versionktzxm.pdf
    • https://cdn.sqhk.co/zifeduwa/pHJget5/mobile_phone_ringtones_free_download_zedge.pdf
    • https://cdn.sqhk.co/pibepufas/bMvOhf6/melipoxeparuwojaj.pdf
    • http://kugaraginoja.mypressonline.com/moldes_de_letras_grandes_y_bonitas_para_imprimir.pdf
    • http://zanartcc.net/gerizepajisareb3bg62.pdf
    • http://purpless.vip/how_to_enable_cheats_in_warcraft_3_frozen_thronebnvtn.pdf
    • https://static.s123-cdn-static.com/uploads/4387814/normal_5ff988192603e.pdf
    • https://cdn-cms.f-static.net/uploads/4462350/normal_604e80433b457.pdf
    • http://info-pages.ru/thomas_friends_adventures_to_shareoxm0n.pdf
    • https://static.s123-cdn-static.com/uploads/4486351/normal_5fc70a7c3d700.pdf
    • https://cdn.sqhk.co/borefigux/lghuTas/8224473480.pdf
    • https://cdn.sqhk.co/lugenaru/NUIifja/13076130875.pdf
    • http://istlan.space/35071751609n23p8.pdf
    • https://cdn.sqhk.co/maxegugej/hdGPgii/99769622029.pdf
    • https://cdn.sqhk.co/sojuzafu/fMlWGjj/fidget_spinner_online_games.pdf
    • https://cdn.sqhk.co/kotafuli/uGT3hdg/61680203786.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wutesejib.onlinewebshop.net/border_design_for_certificate.pdf
    • http://lolunoxij.myartsonline.com/important_abbreviations_download.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_off0000e746.bin
4856c4432a824da04b8ce3c50aef87f63a3e9d085fb9fb2341a050b0fc6c5dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE746 5968 bytes
font_01_sfnt_off0000fbcf.bin
bc73ce7d1d7c6b1c4f9e27e7a341bcb1630a1e40cebe6cd3222d504dbcbc6afc
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 11328 bytes