Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba39a6bacf71318…

MALICIOUS

PDF

72.2 KB Created: 2021-02-18 12:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0759353b62034e2048fdb6e65fd76bd5 SHA-1: 330aa2d58d7a844b3a54763b2c476be6ffc5dc1d SHA-256: 9ba39a6bacf713185fd21fa586ad9761184fdf693d21746ecd23a6279d8dc991
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://seumenha.ru/123?utm_term=asus+p7p55d-e+lx+specs PDF link annotation
    • https://cdn.sqhk.co/mewovegid/NFIaiba/gipekobopikutejedaro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474977/normal_5ff8c3d287e4a.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/idgI2iS/the_last_stand_dead_zone_hacked_game.pdfIn PDF document text
    • http://beststudent.space/ias_interview_questions_and_answers_2014ykuz0.pdfIn PDF document text
    • http://pesale.pro/boomerang_apk_latestylyya.pdfIn PDF document text
    • https://nametipij.weebly.com/uploads/1/3/1/1/131164318/dafusesagokezofafim.pdfIn PDF document text
    • https://cdn.sqhk.co/jepogedofuz/iglhiMH/death_demon_yandere_simulator.pdfIn PDF document text
    • http://zumbayuliya.online/angry_birds_android_games_20176rl2d.pdfIn PDF document text
    • http://alteramaks.world/crush_crush_beach_ballsgi63t.pdfIn PDF document text
    • http://kismykeitio.best/billu_bar_bar_full_movie3emfc.pdfIn PDF document text
    • http://frankiearvelo.com/descargar_mma_fighting_clash_hackf24t0.pdfIn PDF document text
    • http://vawigeg.22web.org/zebifaliviwat.pdfIn PDF document text
    • https://cdn.sqhk.co/gijesali/dnRS6rd/brain_games_for_seniors_free_printable.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vawolanuxoreg.epizy.com/2553573286.pdfIn PDF document text
    • http://tusibav.epizy.com/40500115208.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_off0000de03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE03 5052 bytes
SHA-256: 844a023b295f7b1b35ecd78ae838fc5a6d7d56795d4ce7a3f82e4112892d6228
font_01_sfnt_off0000ef6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6A 10928 bytes
SHA-256: 8f15ea9598e803f14b080765dee354eb7f88389adc1904dd6bf4051de7562aca