Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3c18b81f962710…

MALICIOUS

PDF

71.9 KB Created: 2021-02-13 20:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2ebc01e28137d4ebc22f539900d86cb1 SHA-1: f55f42ab4de56ecfe2882e88018d518f916b5295 SHA-256: 8b3c18b81f962710e4c0271d0beb6103451c8303f9ac336f8619364070a6d988
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=worldfree4u+lol1+co PDF link annotation
    • https://sukorason.weebly.com/uploads/1/3/4/5/134578332/418d718.pdfIn PDF document text
    • http://intereriia.com/65665429682tqoeo.pdfIn PDF document text
    • http://liketime.fun/monster_truck_cakes_near_mecjpvs.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/ifheK7K/35548860123.pdfIn PDF document text
    • https://cdn.sqhk.co/xataruzepape/ggLuehc/tobisijopimufujematus.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/1fccb69cd1b.pdfIn PDF document text
    • http://lujalopenaso.iblogger.org/82169120130.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/ighAhii/nail_biter_meaning_in_urdu.pdfIn PDF document text
    • http://letgtma.bid/44019116098iaqer.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/ilgejhC/island_in_the_sun_lyrics_video.pdfIn PDF document text
    • https://cdn.sqhk.co/zezovajav/jWhjwid/planet_alignment_july_2020_astrology.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/ijg8jeb/second_american_civil_war_2021.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/D6gejeO/sniper_elite_4_cheats_pc_console_commands.pdfIn PDF document text
    • https://neloramobipetez.weebly.com/uploads/1/3/1/4/131407165/vitilesofot-zewulefijov-dawawasoxunilap.pdfIn PDF document text
    • http://supozupewurak.22web.org/cdc_latent_tb_guidelines.pdfIn PDF document text
    • https://bivitomelonex.weebly.com/uploads/1/3/4/4/134491730/xajurubuz.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/hfgf1ZS/cbs_sports_fantasy_baseball_rankings_roto.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/h03UWBo/farkle_10000_free_multiplayer_dice_games.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vapanuwivodoj.epizy.com/53507715400.pdfIn PDF document text
    • http://fizifar.epizy.com/pandora_s_box_6_manual.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_off0000dcc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC5 4780 bytes
SHA-256: 82dea6380d4de5023bc0836a5bcc97a55fbd19c7013d0cc32d4fef96f2ea303c
font_01_sfnt_off0000ed2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2C 11748 bytes
SHA-256: 54bcc37277ddf13ace153a20577dc0583e12a750d5fe1b804a8dddab96b94e06

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