Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8e5efaf9a0e513…

MALICIOUS

PDF

79.9 KB Created: 2021-04-05 00:23:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c4b846b3a13da533c2d831053d1e1882 SHA-1: 4d36a806b4aaf975336d4d0a615dca79037472f4 SHA-256: ff8e5efaf9a0e513f0bb8fb959604fbfd952797364ff3ba6bd75388a6d72ece8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, suggests a lure related to economic systems to entice clicks on the malicious link.

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://jumiwimov.ru/award?keyword=comparison+between+capitalism+and+socialism+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466662/normal_60589fadd0252.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374374/normal_5ffece692db4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367919/normal_5ffb893dd3f17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_600b2e94a8864.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d84482a5-8397-4f7e-93d2-d16a87356bb5/will_a_kerosene_heater_heat_my_garage.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/wonderful_life_song.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/xewazumat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46364f80-cf41-4006-8636-81ff6aa6c3b6/4640655797.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/94616288644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80672d17-19f9-4cc8-884c-bdeae768c16b/craftsman_pyt9000_42_inch_blades.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/2019_building_construction_costs_book.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/35254112324.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/what_is_defense_white_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df56b2c6-28a3-4d4e-9810-b03d746f924b/nefupis.pdfIn PDF document text
    • http://zefexivatovuk.epizy.com/diet_chart_for_weight_loss_for_male_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1721a27-8fe9-41d2-ac25-876e7bf8b04d/public_speaking_anxiety_treatment_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c242343-4c23-4449-b4c0-74a5a59da7b7/netgear_wnr2000v5_firmware_upgrade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42aac78a-bf22-49e6-8d90-9378167cab99/bear_archery_threat_rth_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10605860-9175-4cf6-b949-4296b0823066/pumekazebadekeku.pdfIn PDF document text
    • http://niwanabumupe.epizy.com/tanita_bc_418_software.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD9 5344 bytes
SHA-256: 49ebf5658199d1d9d495b52d866b500317b79b6756c8c333eeafc69a28c0df22
font_01_sfnt_off0000ffef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEF 9976 bytes
SHA-256: 01142fca04f7d053136a4fa16428687d197b672ce4538211f69c661eb09091ee
font_02_sfnt_off00012213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12213 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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