Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2193de52c8628de…

MALICIOUS

PDF

73.1 KB Created: 2021-01-30 20:13:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cad5b50434f6e47af1db4ecbdb75f40e SHA-1: 470c8c9066ad710a751f518bc0415ddbe4feb97c SHA-256: d2193de52c8628de3d1647b5733843f659584fd0f740feabb89b180e5adfb4c4
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/123?utm_term=sharper+image+laser+tag+guns PDF link annotation
    • https://cdn.sqhk.co/bomemenun/gffIihE/5223028219.pdfIn PDF document text
    • https://cdn.sqhk.co/tonufipu/b7TbHgc/trench_assault_mod_game_download.pdfIn PDF document text
    • http://zazuvivilug.iblogger.org/capoeira_angola_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/fifhgXk/road_trip_snack_ideas_for_adults.pdfIn PDF document text
    • http://pasendapp.online/wemunanizexedaguwinudu1qa7j.pdfIn PDF document text
    • http://fupomogusi.22web.org/81068909402.pdfIn PDF document text
    • http://kulokozataxat.22web.org/wavepad_audio_editing_app_free.pdfIn PDF document text
    • http://yblda.fun/jesesadimudogatoreeax5s.pdfIn PDF document text
    • http://gelchlen.fun/loop_pedal_with_drumsmjcdl.pdfIn PDF document text
    • http://helper-badges.com/peel_off_face_mask_diy_easyrhj3j.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/YoiaVu6/bulleit_bourbon_10_year_limited_release.pdfIn PDF document text
    • https://cdn.sqhk.co/nurafurofopu/cOgihhY/oconomowoc_memorial_hospital_er.pdfIn PDF document text
    • https://cdn.sqhk.co/nugunexinazo/hdqgchd/3385293556.pdfIn PDF document text
    • http://merovew.xyz/simew6e7z0.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/ghhdpjc/new_tik_tok_videos_telugu_2019.pdfIn PDF document text
    • http://kmikaerfs.ru/mapetonetabijemetibezaka2lfpt.pdfIn PDF document text
    • http://drilltech.info/der_eisendrache_easter_egg_guidea09pk.pdfIn PDF document text
    • http://abanca-electronica.com/69930878226o8wmb.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/bjeahfB/josubuxakikuxe.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/jcWbajb/bogegubimamisanusobodo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lobulowigewimu.epizy.com/51011097724.pdfIn PDF document text
    • http://lilivuxaja.rf.gd/cds_2_ota_syllabus_2019.pdfIn PDF document text
    • http://gafawazela.epizy.com/38147887169.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_off0000de17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 5336 bytes
SHA-256: f0c284a4b773982b63a56cdbf6dcc9550dc9f73c7689b7377bbfdc9f391e703d
font_01_sfnt_off0000f00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00F 11628 bytes
SHA-256: 8a761ac788a447a3755728666df45630a158c9c9796d0144fb942d8f3fad7ba3

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