Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e9702b610e4477…

MALICIOUS

PDF

75.3 KB Created: 2021-02-11 13:58:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 39bcd392033f2fed2e503033b5e1a00a SHA-1: 10ddf4ef17225a9f2160a0117acd862eb6863048 SHA-256: 04e9702b610e44773703500a6c0648433d994625c214822cecaae8a0d100a376
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical detection score. It contains an embedded external URI pointing to 'druttle.ru', which is likely part of a phishing or malware distribution scheme. The document body is heavily obfuscated, but the presence of external links and the overall heuristic firings suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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://druttle.ru/aws?utm_term=maplestory+m+weapon+guide+max+stat PDF link annotation
    • https://cdn.sqhk.co/wulupumiwi/XxN3DaB/repair_nail_holes_in_hardwood_floors.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/icgevih/core_elementalist_build_gw2.pdfIn PDF document text
    • https://cdn.sqhk.co/rasirise/gBkhev3/dancing_road_color_ball_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/q9ja5zg/4651442612.pdfIn PDF document text
    • https://cdn.sqhk.co/ponesigis/ahchihh/xisepomiliv.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/dMKhehb/nom_plante_grasse_fleur_jaune.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/GOjdic0/bovedixuwowomiz.pdfIn PDF document text
    • https://cdn.sqhk.co/wofetewa/b57zjWR/66805888492.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/hgIgci3/90549209140.pdfIn PDF document text
    • http://pijitirade.iblogger.org/checklist_template_creator.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/al_gore_an_inconvenient_truth_worksheet.pdfIn PDF document text
    • http://rogofijanititad.epizy.com/vozilivev.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/kuwivolixinezomonijub.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/vediratumoj.pdfIn PDF document text
    • http://vabagez.rf.gd/ai_adobe_illustrator_viewer.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69F 5544 bytes
SHA-256: 46f2dca7f10121f50528cf565d1b2f6da313ea42dac9dea5ce431d576e74672a
font_01_sfnt_off0000f98d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98D 11416 bytes
SHA-256: 03eab3815238f1bc5010b1ed16462fe198a00198509eb9222b2a170f082e4890