Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b16ee7c1ab47840…

MALICIOUS

PDF

78.1 KB Created: 2021-02-24 04:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 04787c9184ceda12cad49bacc6ca2675 SHA-1: 40a7bdb5b573888ab66abc49e0c0f248fe33e8c9 SHA-256: 1b16ee7c1ab47840d47cfbab855908cf85a367b2ff0947b654f2ccfd033f80c9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=toro+518+ze+specs PDF link annotation
    • https://cdn.sqhk.co/nuvexajamu/idhcojb/you_are_hopeless_romantic.pdfIn PDF document text
    • https://cdn.sqhk.co/voravaxa/I3jglih/yu_gi_oh_duel_links_top_decks_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/powedaguja/D2mAqhc/island_beach_state_park_hours.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/how_to_assemble_wahl_clipper_blades_with_springktg6a.pdfIn PDF document text
    • http://gufutaca6.xyz/militia_army_war_mod_apk_downloadd6e8m.pdfIn PDF document text
    • http://lutefofojonu.iblogger.org/the_electoral_process_worksheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365638/normal_5fe4d32e472e2.pdfIn PDF document text
    • https://cdn.sqhk.co/fudikuzi/jheaQgj/my_wild_pet_online_animal_sim.pdfIn PDF document text
    • http://labiosdewonda.com/kindergarten_readiness_activitiesbliyv.pdfIn PDF document text
    • http:///\\\/twitter.com\\\/snowblowersdir\,\icon\:\icon-twitter\,\title\:\Twitter\},\Pinterest\In PDF document text
    • http:///\\\/pinterest.com\\\/snowblowersdir\\\/\,\icon\:\icon-pinterest\,\title\:\Pinterest\},\YouTube\:{\href\:\https:\\\/\\\/www.youtube.com\\\/user\\\/SnowBlowersDirect\\\/\,\icon\:\icon-youtube\,\title\:\YouTube\},\Instagram\:{\href\:\https:\\\/\\\/www.instagram.com\\\/powerequipmentdirect\\\/\,\icon\:\icon-instagram\,\title\:\Instagram\},\LinkedIn\In PDF document text
    • http:///\/www.bbb.org\/chicago\/business-reviews\/industrial-equipment-and-supplies\/power-equipment-direct-in-bolingbrook-il-57001088,title:SnowIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fijukarevi.epizy.com/wemus.pdfIn PDF document text
    • http://zuwosopawekaz.rf.gd/acute_prostatitis_treatment_guideline.pdfIn PDF document text
    • http://mafonoxerinomif.epizy.com/79509733427.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/83541938352.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/boomerang_video_app_android.pdfIn PDF document text
    • http://sadevimesi.rf.gd/barcode_reader_win_10.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_off0000f158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF158 5056 bytes
SHA-256: f147a8c9fb2772d80cf4a4041a57e13957e2172dca35d12ead3e99abda6d4c44
font_01_sfnt_off000102b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B2 12844 bytes
SHA-256: 0b0e362869976209167f6a357837ee79d6abf3d8ddc1d74850feaede8ebcc9e1