Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd6ec985254e532…

MALICIOUS

PDF

74.3 KB Created: 2021-02-22 17:46:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 3fee764770dab1b191a944e5233fb6ef SHA-1: 9ccc15260571955d20f71a090b2c74514599c0fe SHA-256: fbd6ec985254e5321b1673a30b4d758975e86383119b155a00594da112da3bb8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata related to its creation, suggesting it was generated by a tool rather than being a legitimate document.

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://leonvi.ru/strik?utm_term=what+does+the+quote+now+is+the+winter+of+our+discontent+mean PDF link annotation
    • https://cdn.sqhk.co/ranotigu/b3fpsie/wemowivekelalorexenije.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/1irja7x/fortress_under_siege_hd_mod_apk_revdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450727/normal_5fdc1d3bb8fa5.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/YgixIhb/motorcycle_adventure_tours_british_columbia.pdfIn PDF document text
    • http://kawopewil.22web.org/dofav.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/jfzt9M6/horizon_chase_world_tour_car_games.pdfIn PDF document text
    • http://digerutejonoju.22web.org/balance_sheet_of_sony_company_2017-_18.pdfIn PDF document text
    • https://cdn.sqhk.co/bisidilit/4jejfhe/gold_rush_miners_perspective.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/dRidjhb/dazifevosikaxirugomo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480173/normal_5fefc9e6e2a1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381091/normal_5fccb50c7deb1.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/ggihj5y/photo_collage_studio_online.pdfIn PDF document text
    • https://cdn.sqhk.co/mekibekowufe/cjgjdjg/homo_evolution_human_origins_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/xXhaCX9/21748167378.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/mokixetat/13873623396.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/article_15_full_movie_filmyhit.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_off0000e4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EF 5460 bytes
SHA-256: ab78dcd592d605e22671e526e5a143d1e9fcd8a928f85d8561e4995a4f08f4b2
font_01_sfnt_off0000f76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76D 10808 bytes
SHA-256: 7be461e6a4ec5a80f185c43f2fbc7e53d9335e4fd800df4f77f5676d6b30985d

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