Malicious PDF — malware analysis report

Static analysis result for SHA-256 480684759b75ac92…

MALICIOUS

PDF

80.2 KB Created: 2021-03-17 23:21:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 572f350f4ef939b261d14a0dbaa6cba3 SHA-1: bade8fbd8030d8b35eb8216fbdc7a7631c7809dc SHA-256: 480684759b75ac928636651c54399183f2c2d1c907e37ce9acd0c36b3782741a
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting or suspicious domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/award?keyword=agorafobia+tratamiento+pdf PDF link annotation
    • https://cdn.sqhk.co/vimerokil/gdJjchh/wufuz.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/numetepedawagipatlv5i9.pdfIn PDF document text
    • https://bixirugabo.weebly.com/uploads/1/3/0/9/130969405/lijuseboges.pdfIn PDF document text
    • http://jenoxatefogejo.22web.org/mechanical_engineering_drawing_interview_questions_and_answers.pdfIn PDF document text
    • http://wekeb.space/different_kinds_of_process_flow_diagramk0uzk.pdfIn PDF document text
    • https://wenojobopowegit.weebly.com/uploads/1/3/4/8/134879608/figozunazibi-sapesunes-gokimaw-mozavawof.pdfIn PDF document text
    • http://mirunex.iblogger.org/95856705183.pdfIn PDF document text
    • http://psylath.com/zepotezofitalitonildnvsg.pdfIn PDF document text
    • http://bazis-rostov.com/37842858522tll0e.pdfIn PDF document text
    • http://begetus11ppz.xyz/worms_zone_io_game_mod_apk20r77.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/hfShcib/world_war_3_european_wars_mod_apk_download.pdfIn PDF document text
    • https://vokarojunez.weebly.com/uploads/1/3/2/6/132696330/421940f050b.pdfIn PDF document text
    • https://xexafuru.weebly.com/uploads/1/3/1/0/131070851/7480739.pdfIn PDF document text
    • http://bovinuxunegobi.iblogger.org/78039717059.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/937b15bf-4e0c-45e6-843c-29ff73945dcd/14842587114.pdfIn PDF document text
    • http://dabazageneve.rf.gd/harry_potter_movies_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a77b138-32fb-4dc8-8164-eb39ccc4c590/cant_stop_wont_stop_p_diddy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfadaa2c-d0cc-4d3b-a2bd-a7977c58d58a/16457814934.pdfIn PDF document text
    • http://sudebitije.rf.gd/xavibupejoduver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c336daf-e4ca-4590-8988-332440d4c9ed/primeros_auxilios_basicos_para_nios_escuela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c92e2bf-1039-4eef-99e1-4e78e0f62ba6/wiresobokemamanu.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_off0000fb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB71 5280 bytes
SHA-256: 2faf850b504c355ce5ea08ed07a79f74e7f00d994f82852771075bf5e8eab1e6
font_01_sfnt_off00010d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D54 11332 bytes
SHA-256: 0526efe775561c14915a4adf926e74be3e5c9c40e62215d2491309dc0a07ace9

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