Malicious PDF — malware analysis report

Static analysis result for SHA-256 99699ad5703911b5…

MALICIOUS

PDF

64.2 KB Created: 2021-03-04 21:30:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a2d3dff6a624d4335d2209e4fb3290a1 SHA-1: 21eeeae95159482d62966dcf70d05ccb5b2c1a7d SHA-256: 99699ad5703911b5247dcc22a24e1fb1003756f4c0fe84bc231218c52c8859ef
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/strik?utm_term=after+we+fell+movie+shooting PDF link annotation
    • https://cdn.sqhk.co/putomikoluku/gdaihf0/kuwosowunafo.pdfIn PDF document text
    • http://bigpleasure.ru/what_does_take_the_road_less_traveled_mean8oduq.pdfIn PDF document text
    • http://frukt.fun/articles_on_education_system_in_pakistanvcf9q.pdfIn PDF document text
    • http://it50life.pro/anti_ragging_form_du_2019bdnw4.pdfIn PDF document text
    • https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/b7aa27874d.pdfIn PDF document text
    • https://cdn.sqhk.co/wepigosogo/iidNLi7/find_my_friends_app_on_iphone_xr.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/WOAj83o/how_to_catch_flying_butterfree_pokemon_sword.pdfIn PDF document text
    • http://magic-world.site/auto_clicker_for_iphone_applelkn4k.pdfIn PDF document text
    • http://dream-stat.ru/jisipugazawez461q1.pdfIn PDF document text
    • http://nanolenka.xyz/lemage8cq3s.pdfIn PDF document text
    • https://cdn.sqhk.co/sugifila/6ighjjj/90756621089.pdfIn PDF document text
    • https://tuzuratodaf.weebly.com/uploads/1/3/0/7/130738639/7178580.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/rikolesafuwofar/what_is_the_strategic_model_of_judicial_decision_making.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88014057-329c-40cf-a0b8-1eccea882653/turebarovuzibiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff19b1dd-de97-48e4-9a12-b50724ee1bd1/34137791286.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/kill_team_starter_set_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/surilawixapuk.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/rexofivixebunifot.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_off0000c20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20D 5112 bytes
SHA-256: 8c88477fd15a610c38562683d0298547a315ebb30f8494205a45fbc59e3e7e5b
font_01_sfnt_off0000d366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD366 9572 bytes
SHA-256: 37df824087ccbee5292a2c35447d85ed448d3d0e14902b4d3ff78ef04a9d9e8e