Malicious PDF — malware analysis report

Static analysis result for SHA-256 70105be411e2f40c…

MALICIOUS

PDF

76.1 KB Created: 2021-04-02 00:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d16ba26f38b0b255c173c49a968b8b55 SHA-1: b621849063618ef8959e7e05e2ad1516dc4e14c2 SHA-256: 70105be411e2f40c38fbdaa17a63fc086d6720ceb0262f97be18d81ad072512a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, suggests a lure related to 'Tales from the Loop trailer', which is likely a pretext to drive users to the malicious URLs. The presence of embedded URLs and the overall structure strongly indicate an attempt to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=tales+from+the+loop+trailer+ita PDF link annotation
    • https://cdn.sqhk.co/baxorurifina/qiWhfgd/52108730882.pdfIn PDF document text
    • http://idealica-italiaofficial.site/suburban_rv_water_heater_instructionsomiig.pdfIn PDF document text
    • https://cdn.sqhk.co/bidomutarili/bigggge/gawirez.pdfIn PDF document text
    • http://insuranceautousa.com/how_to_reset_a_vizio_sound_bar_remote24kn2.pdfIn PDF document text
    • http://kelnoteres.xyz/voxugidawesapexazamuda7uulv.pdfIn PDF document text
    • http://ig-about.net/pivokemopepoluxi972xv.pdfIn PDF document text
    • http://masovizifuzaro.iblogger.org/adobe_illustrator_certificate_templates_free.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/56266425808ubf2w.pdfIn PDF document text
    • https://cdn.sqhk.co/nujekezitifi/dbhjgev/ben_10_hero_time_game_apk_download.pdfIn PDF document text
    • http://adminhalil.com/samsung_calculator_secret_appvgoqe.pdfIn PDF document text
    • http://varistop.site/bradford_white_defender_water_heater_flammable_vapor_sensor_resetgvstj.pdfIn PDF document text
    • http://requiredjokblog.com/In PDF document text
    • http://zapajewoda.22web.org/motorola_sbg6782-ac_login.pdfIn PDF document text
    • https://cdn.sqhk.co/pinebiven/heggKPl/vipopixagato.pdfIn PDF document text
    • https://cdn.sqhk.co/vonirosidejo/RgeKFok/amazon_music_unlimited_cost_per_month_uk.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://waystep.site/zusizegaxamasigorusilwtlp9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimafox.epizy.com/83271103611.pdfIn PDF document text
    • http://kugefosames.rf.gd/51376844018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59720087-e902-4df4-b678-4b3f915486ba/oracle_11g_sql_loader_download.pdfIn PDF document text
    • http://sewadereweben.epizy.com/givamegixeputupak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d18dc76b-c22d-49ff-89bb-50f92667445f/notelonadoxanududafum.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_off0000eb79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB79 5092 bytes
SHA-256: 2433635534070b7a048cb9750b44800eef57b398f306d2737e26fecf4bbe0d09
font_01_sfnt_off0000fc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9C 11052 bytes
SHA-256: 8c0fe62664f33aaa16a3b936c9dddb28c07f0193e07f34a9758e9e78c62e6e4f

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