Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b93e0172e2d3a63…

MALICIOUS

PDF

74.3 KB Created: 2021-02-23 18:29:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 06e746a7c535bab8ed2da0d7d68328ae SHA-1: 995550b34c3ead33789e82807ec88d24315adac7 SHA-256: 0b93e0172e2d3a638977941a188ac038ddcb9275114028f0c8b06e2e3a38d9bb
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=how+important+is+a+dj+at+a+wedding PDF link annotation
    • https://cdn.sqhk.co/lekixubegewo/Ahchhjd/84140499614.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiren/BzhhK2C/battleship_half_marathon_wilmington_north_carolina.pdfIn PDF document text
    • http://topsalon.xyz/how_to_pair_plantronics_voyager_5200_with_iphonex52ce.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/jaihnqK/drift_zone_2_v2_4_mod_apk_rexdl.pdfIn PDF document text
    • http://ig-copyrightviolation.com/world_war_z_game_trophy_guidexu6wq.pdfIn PDF document text
    • https://cdn.sqhk.co/bukoxomule/ChaHifE/41922257409.pdfIn PDF document text
    • http://ridunculus.com/razoruxowajuwowofugufubr82r.pdfIn PDF document text
    • https://cdn.sqhk.co/gesuxafom/ehehhVf/best_video_calling_app_for_android_and_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwebilux/jent4LX/doing_one_good_turn_a_day.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/2jhidVh/jefupixex.pdfIn PDF document text
    • http://bizbize-yeteriz.org/19056256577uukch.pdfIn PDF document text
    • http://findssldz.xyz/email_writing_template_examplesr3m9e.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/gusule/them_belly_full_lyrics_chords.pdfIn PDF document text
    • http://rufeluvogoweva.epizy.com/89095540.pdfIn PDF document text
    • http://pimuxexud.epizy.com/jealous_labrinth_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/boswellia_papyrifera.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/80th_birthday_invitation_free_templates.pdfIn PDF document text
    • http://sisawujeza.rf.gd/59292417757.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/sazinifotivajo.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/right_frontal_epileptiform_discharges.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_off0000e54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54F 5376 bytes
SHA-256: a274d1fa7faca7d5b32d7781942de65d3e4d53ee53ce19b38765714cb4c2ca5c
font_01_sfnt_off0000f790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF790 10612 bytes
SHA-256: eae2aa02d161350497f84cbfbf58bd576bbebfa09e1421904be59fb61344928b

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