Malicious PDF — malware analysis report

Static analysis result for SHA-256 d27eb3dc1866e2b0…

MALICIOUS

PDF

70.9 KB Created: 2021-03-08 16:34:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 68ac080f36ec94f68b727de65e401d1a SHA-1: aeb5b749c815f87901410c43123a36e672af43d2 SHA-256: d27eb3dc1866e2b0139f76d2e8a3e0143270865cac96dc1951a1863fb321498c
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports malicious intent. The embedded URLs are likely used to redirect users to malicious sites, potentially for credential harvesting or second-stage payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=r+k+c+l+ki+full+form PDF link annotation
    • https://cdn.sqhk.co/jumivosokigo/Bihihhw/thoracic_outlet_syndrome_symptoms_headache.pdfIn PDF document text
    • http://fruit-italy.space/bakudimobenagq1fz.pdfIn PDF document text
    • http://microdigitalmeter.xyz/blood_infection_in_baby_treatmentk0niq.pdfIn PDF document text
    • https://cdn.sqhk.co/zogowefu/cV2JPjd/sonic_adventure_2_gamecube.pdfIn PDF document text
    • https://cdn.sqhk.co/gexedamej/lBiSuhd/wijixabatujuwuporofo.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/0cjj5he/98132261456.pdfIn PDF document text
    • http://tublitalia.fun/38936460688lp4qx.pdfIn PDF document text
    • https://gogodelile.weebly.com/uploads/1/3/0/9/130969080/jodewuvadesepe-kexexerexadipu-worow.pdfIn PDF document text
    • http://wildber.store/74355867564hx1fd.pdfIn PDF document text
    • http://uspex22.online/1373080065dpbhw.pdfIn PDF document text
    • http://myluckybet.xyz/91788041337qfm9s.pdfIn PDF document text
    • https://cdn.sqhk.co/wolanojijen/cdoUuhi/lep_s_world_3_download_for_mac.pdfIn PDF document text
    • http://world-wildshop.com/laledizetumqynh.pdfIn PDF document text
    • http://eferevole.com/8902997516mgaav.pdfIn PDF document text
    • http://copyrighthelp.info/61696285784l9tg0.pdfIn PDF document text
    • http://leadtop.co/hacksaw_ridge_movie_dual_audio_300mbd9ghy.pdfIn PDF document text
    • https://lazofakivew.weebly.com/uploads/1/3/1/4/131406449/rosefisalugov.pdfIn PDF document text
    • https://sepiximefajo.weebly.com/uploads/1/3/4/8/134849953/4054033.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/pieyJgc/face_mask_makeup_artist.pdfIn PDF document text
    • https://cdn.sqhk.co/gazegarov/eje5hiD/viral_videos_2020_via.pdfIn PDF document text
    • https://gaparomid.weebly.com/uploads/1/3/4/6/134632142/bovuwukijirorodirini.pdfIn PDF document text
    • http://winoorama.site/hard_rock_ringtones_mp3_downloadu89zb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94C 4712 bytes
SHA-256: 4ae553ca447c7d843e66acd3b979fbb5775d24720980472699ac3d76b25e5cbb
font_01_sfnt_off0000e946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE946 10928 bytes
SHA-256: be434d381c148593ed610ccdf90ece19d356c194e393af002bec5d48ac5731f4

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