Malicious PDF — malware analysis report

Static analysis result for SHA-256 8867f5be3cd9e158…

MALICIOUS

PDF

73.2 KB Created: 2021-02-13 13:45:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9b62967d9939ade93e1d48341eb1ae72 SHA-1: ebf63a0cb96a9df3ec5f5c8257bf2efc7c390043 SHA-256: 8867f5be3cd9e158e19508e2c4340dfc96db4e4580b37742a9b87b55d2c18da7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=league+of+stickman+mod+apk+2 PDF link annotation
    • https://cdn.sqhk.co/gerukoso/ibihjiy/58742285979.pdfIn PDF document text
    • http://smm-target.ru/the_wettest_county_in_the_world_free9jttk.pdfIn PDF document text
    • https://cdn.sqhk.co/dukapudubi/haJgigi/radar_mobile_speed_gun_app.pdfIn PDF document text
    • https://cdn.sqhk.co/pepupiribojo/fliijjR/35804480413.pdfIn PDF document text
    • https://cdn.sqhk.co/pefemezized/gd2jiic/stickman_football_gif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_6015937d84a6a.pdfIn PDF document text
    • http://detonicufficiale.website/extreme_balancer_3d_ball8cqww.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/dghAheS/boo_hoo_crying_slang.pdfIn PDF document text
    • http://homebig.space/royal_typewriter_manualf6xe7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529697/normal_5fcb0652975b8.pdfIn PDF document text
    • https://fapixuguxoga.weebly.com/uploads/1/3/1/0/131070829/vawefivada-tomitewal.pdfIn PDF document text
    • http://badenodovaze.22web.org/33351352675.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/zufojadibi/zufexupawozizufekozapof.pdfIn PDF document text
    • http://pezedavepajizum.rf.gd/gegojipepekof.pdfIn PDF document text
    • http://kinadawefenipe.rf.gd/merge_files_into_one_page.pdfIn PDF document text
    • http://nabikelotedabe.epizy.com/christmas_colouring_sheet_free.pdfIn PDF document text
    • http://kufobidup.epizy.com/asio4all_mac_os_x.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/workout_plan_to_get_ripped.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/87126649180.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/assetto_corsa_drift.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_off0000e0e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E9 5484 bytes
SHA-256: 23f5ab636ed17a803f34c27d9c8b04a14d7c25bea49f19021b1af5ae20ec63d8
font_01_sfnt_off0000f398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF398 10380 bytes
SHA-256: 07e3ef935149857da7249662bd10157df804d29cc6b1948a56e7554f7ad53591

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