Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7ce687e571bfcc…

MALICIOUS

PDF

81.3 KB Created: 2021-04-01 10:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9469e2d087745b7fb78a3002bf6bef01 SHA-1: d27d5675e7b152a1f045152195f83bf695010c43 SHA-256: ae7ce687e571bfccfc4c6f29371e41ba294d62746b5cc47fa48b258a80510c63
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs that point to a link farm hosted on disposable domains, suggesting a phishing or malware distribution scheme. The PDF itself appears to be a lure, possibly related to 'capitalismo consciente', directing users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/award?keyword=capitalismo+consciente+resumen+pdf PDF link annotation
    • https://cdn.sqhk.co/fewoxenovof/dKhoeHs/72554980309.pdfIn PDF document text
    • https://cdn.sqhk.co/wenisuvuroju/h9bQnhb/parallax_live_wallpaper_3d_backgrounds_2k_4k.pdfIn PDF document text
    • https://cdn.sqhk.co/kevekelobivo/dhjeiaV/mobile_games_bubble_breaker_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/roratumopiv/r9shdji/14077223306.pdfIn PDF document text
    • http://xomofaki.getenjoyment.net/buwiga.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/basic_italian_phrases_quizlet.pdfIn PDF document text
    • http://runivofo.iblogger.org/83797578329.pdfIn PDF document text
    • http://olx-delivery.cc/jageroxadusubgqg.pdfIn PDF document text
    • http://worozoxiw.sportsontheweb.net/tumidiruxatutonekimaw.pdfIn PDF document text
    • http://juzezudusota.mypressonline.com/84307363224.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/the_enneagram_book.pdfIn PDF document text
    • http://kigumelez.medianewsonline.com/oxford_bookworms_collection_crime_never_pays.pdfIn PDF document text
    • http://gizesodawesiv.mywebcommunity.org/bamin.pdfIn PDF document text
    • http://apparentlyopt.com/50668445305hoy4z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://somituxebo.rf.gd/knee_strengthening_exercises_gym.pdfIn PDF document text
    • http://gagelenobom.epizy.com/banana_boat_sport_performance_expiration_date.pdfIn PDF document text
    • http://pozirumine.epizy.com/lotibogifogir.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/30488134786.pdfIn PDF document text
    • http://xidefuj.epizy.com/12686318025.pdfIn PDF document text
    • http://zovoxasus.rf.gd/26831599227.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_off0000fe94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE94 5208 bytes
SHA-256: 602b3916547d988da621866298f38892c4d252a9a389eb9e411ab45375c61c57
font_01_sfnt_off0001102d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1102D 11728 bytes
SHA-256: 619bd94214fc3ebc9de26b5b16af4c37273aba08645b8d691c9e8471d35dacca

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