Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1989ceb9af21725…

MALICIOUS

PDF

75.7 KB Created: 2021-04-04 10:11:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7c8863944d71b29fd2d5949d32b5f6eb SHA-1: 50dafa230dbc2a89fc0e7c597a3f613570ad1419 SHA-256: e1989ceb9af217256962f026590580fbdfc98230b740659439324086197a3d64
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://soxebez.ru/award?keyword=both+either+neither+explanation+pdf PDF link annotation
    • https://depopuxa.weebly.com/uploads/1/3/4/8/134893869/1117220.pdfIn PDF document text
    • http://nulepunu.22web.org/wixole.pdfIn PDF document text
    • http://fullhp.info/sadugerazat7zy2.pdfIn PDF document text
    • http://sparzha.club/46950315761j4jjo.pdfIn PDF document text
    • https://sapafusazefo.weebly.com/uploads/1/3/4/4/134496158/tutefusuledudap_kisadub_duribexegeli.pdfIn PDF document text
    • http://idealica-italiauficiale.website/pilot_logbook_app_australiazwxnt.pdfIn PDF document text
    • http://wow50.pro/matemtica_financiera_inters_simple_ejercicios_resueltosu624p.pdfIn PDF document text
    • http://pannochki-art.com/fexigalokejadnw1b.pdfIn PDF document text
    • http://frukt.fun/faroxagidaniwaybkcm.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/fe11f038633658.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/mitutoyo_digimatic_caliper_manualuyo8t.pdfIn PDF document text
    • http://aduo5.online/piano_sheet_music_schindler_s_list_themednr2w.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/wolina/munalilexenop.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/tebaguvu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a5ab9d3-93b9-47a1-a40a-a8a5088e0dbe/how_to_reset_technicolor_modem.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/all_about_anna_imdb_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3681d4f-08d7-4bfd-b7cf-aab9d4364a54/what_is_considered_full_time_employee_for_ppp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c1d936-e608-4b94-8047-be4c89f86b17/aposentado_paga_imposto_de_renda_retido_na_fonte.pdfIn PDF document text
    • http://fulisawuxulinis.rf.gd/bogie_suspension.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da943f21-bac3-43e2-a96c-827b83fb4c49/78952988038.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2E 5068 bytes
SHA-256: ccba39d2819f34b950288da660eefbdd10c5f24ef4009b883494e79f979ddd2b
font_01_sfnt_off0000fc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6E 10856 bytes
SHA-256: 3465e9e2969a50840e4f6c7f28c3fb843b5363fc5d5084734acb3406b3bc9482

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