Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d1becf8554ddc2…

MALICIOUS

PDF

76.8 KB Created: 2021-02-02 08:06:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9f8c7698203cac03c33713a20a67661f SHA-1: 07cd92402bdec23663429bf806bf5e3790ed55b7 SHA-256: 22d1becf8554ddc243d129a79bd29c7b5e8d8099372813292aedf561fafc9a90
126 Risk Score

Malware Insights

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

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 0.9996

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://maypoin.ru/aws?utm_term=format+file+pdf+adalah PDF link annotation
    • https://cdn.sqhk.co/dovawowo/jjBhcgg/cake_decorating_ideas_for_a_man_s_birthday.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/J8hiihg/zajusoxawukinopen.pdfIn PDF document text
    • http://mnogolidov.xyz/kaminutokubezarajupufara4r7e6.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/fihwjgV/the_advisors_alliance_netflix.pdfIn PDF document text
    • https://cdn.sqhk.co/fitodofafe/Re0hohg/40506264922.pdfIn PDF document text
    • http://max-lifting.store/pixar_trivia_questions_and_answersl7n4c.pdfIn PDF document text
    • http://fenofaxizuva.22web.org/7109797071.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/2LhVrOG/xokebal.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/nGggidu/49124608525.pdfIn PDF document text
    • http://bionatur.space/livro_pneumatologia34jeh.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/bibHjiz/sw_passive_color_scheme.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/xjj9iaG/duvuf.pdfIn PDF document text
    • http://euroshopme.site/2800066554nem4a.pdfIn PDF document text
    • http://vofefipegurixu.iblogger.org/play_store_save_apk_file.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/tSJsid1/aus_video_ein_gif_machen_iphone.pdfIn PDF document text
    • http://about-central.com/zen_en_el_arte_del_tiro_con_arcone9xy.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://s3.amazonaws.com/bevekizadoxuj/justification_report_generation_utility_latest.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/dark_tower_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/lirolekogegaf.pdfIn PDF document text
    • http://woriloxalodar.rf.gd/tasumejapulalejize.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/48555369546.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_off0000e360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE360 4740 bytes
SHA-256: 53e3d1894aaaed3f3d9683ab87ac0442a05e841bf79361a810d9fe8da12a9151
font_01_sfnt_off0000f374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF374 10692 bytes
SHA-256: d3f40e59d050d31830002206375489e15805900059bb59de23e74dbf65bf39f6
font_02_sfnt_off000117e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E3 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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