Malicious PDF — malware analysis report

Static analysis result for SHA-256 43848b7d42d40478…

MALICIOUS

PDF

86.1 KB Created: 2021-03-18 16:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 34fae296224bb550019adea48ee36586 SHA-1: 9e7c6d7c2108e6172c97534af2568515dab1a74d SHA-256: 43848b7d42d404789270abccada30df87df5eddc7591c94e9af5f2e8f85000bc
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. One of the primary URLs, 'https://lozipotod.ru/award?keyword=azure+data+factory+v2+tutorial+pdf', suggests a lure related to a tutorial, likely to trick users into downloading further malware. The PDF structure and embedded links are characteristic of phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://lozipotod.ru/award?keyword=azure+data+factory+v2+tutorial+pdf PDF link annotation
    • https://vudexugir.weebly.com/uploads/1/3/2/7/132710723/3308590.pdfIn PDF document text
    • http://rm-swis-mine.com/ejemplo_de_guion_teatral_para_nios06636.pdfIn PDF document text
    • http://ehaberdevlet.com/why_does_inbreeding_cause_problemsmk0sk.pdfIn PDF document text
    • https://naboparukoxe.weebly.com/uploads/1/3/3/9/133997388/makevit.pdfIn PDF document text
    • http://vijuziruzunubiz.iblogger.org/social_media_and_their_founders.pdfIn PDF document text
    • http://yildirimotobursa.com/eclipse_free_for_ubuntu_14._04xcxv3.pdfIn PDF document text
    • http://fortuneo-enligne.com/anandam_mp4_video_songs_freef3sxe.pdfIn PDF document text
    • http://yandex-dostav.ru/joguvaxet6krtd.pdfIn PDF document text
    • http://shoop-fl.ru/fastest_bowling_techniqueepubx.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/1045340.pdfIn PDF document text
    • http://robertferrell.net/34917925517z7cp8.pdfIn PDF document text
    • https://pibubeje.weebly.com/uploads/1/3/4/3/134374065/c8612bcc3f2a1a5.pdfIn PDF document text
    • http://richteam.site/47550743227wki2z.pdfIn PDF document text
    • https://jamelowo.weebly.com/uploads/1/3/1/6/131606155/4987753.pdfIn PDF document text
    • http://50offit.pro/thank_you_lord_for_loving_me_lyricsn8nvr.pdfIn PDF document text
    • http://welutotadaxol.iblogger.org/adda_247_application.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/lovetijif/britax_marathon_clicktight_convertible_car_seat_cover_set.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/97897044834.pdfIn PDF document text
    • https://1cd0d4d5-11d4-440c-a307-81f73801f601.filesusr.com/ugd/f0e51d_3d9353652dec4e7faedb38920f2e1ca0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/96651392853.pdfIn PDF document text
    • https://170d08c7-2527-4f8e-8bc4-cf7f6ffab704.filesusr.com/ugd/afe24e_28b12f7aa98e4781974c4724f2806403.pdf?index=trueIn PDF document text
    • https://4f65501f-cdae-4966-b9db-49b15ad9d196.filesusr.com/ugd/52b593_9aaf443cf59b493eb7c0a7e845fc089b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/capital_structure_of_a_company.pdfIn PDF document text
    • http://kugunimekuxaf.epizy.com/pefonebesonutedimesus.pdfIn PDF document text
    • http://wufajin.rf.gd/60899521534.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/live_tv_apk_for_firestick_2019.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_off00010d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5A 5304 bytes
SHA-256: 86dd4c0766f76f9741d223f9b496fe899536da0538ab98c75aa5b54fd57adc99
font_01_sfnt_off00011f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F96 13348 bytes
SHA-256: 05f34e1f7e176aedb12eb649d797e526efb890b28c545d4bb93661762ce77d6c

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