Malicious PDF — malware analysis report

Static analysis result for SHA-256 99de08a8afb5fa08…

MALICIOUS

PDF

76.7 KB Created: 2021-02-11 01:12:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d7141c1b8ff50bf434e530a1334d34bf SHA-1: 9e9050504ce0301d13db7b444eb3b8d3b7a81ded SHA-256: 99de08a8afb5fa08d0ff72f1aec055c3e653d6ec6834bb27585ed4d2f4c31f30
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=pregnant+from+precum+after+miscarriage PDF link annotation
    • http://lamorebeduzakoj.22web.org/rowebejafot.pdfIn PDF document text
    • http://ratubave.22web.org/xabipatusajabo.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/gehhOjg/komajowenaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452851/normal_6004af118a8dc.pdfIn PDF document text
    • https://nipujari.weebly.com/uploads/1/3/1/3/131384055/rineduro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492593/normal_6008d6686ec40.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/VHjbiid/mac_os_x_movie_manager_for_windows.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424364/normal_5ffd08f417109.pdfIn PDF document text
    • https://mozevosiku.weebly.com/uploads/1/3/3/9/133999333/da6d00.pdfIn PDF document text
    • https://cdn.sqhk.co/dodanadofu/achdhhb/ludipov.pdfIn PDF document text
    • https://cdn.sqhk.co/torixugajo/cZjjxYE/49089472994.pdfIn PDF document text
    • https://lifoluzasodani.weebly.com/uploads/1/3/1/4/131437418/810ece3.pdfIn PDF document text
    • https://cdn.sqhk.co/wojidumezu/jjggcCh/zombie_castaways_star_island_quests.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446379/normal_5fc99e1031f68.pdfIn PDF document text
    • https://tofudilasikota.weebly.com/uploads/1/3/0/9/130969343/438330.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/gewisetug/baseband_5216.pdfIn PDF document text
    • http://kebanibaru.epizy.com/hydrocarbon_reactions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/galapatasitamexojugef.pdfIn PDF document text
    • http://koraxirimaxodet.epizy.com/secured_file.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99C 5304 bytes
SHA-256: 2392bdbf7b798e1548ac5ad81db060731acc1c398d415574c3aacd34df8e75dc
font_01_sfnt_off0000eb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB98 10228 bytes
SHA-256: f9d430ecf3e336fac883b99335d801ec9a68844807917d67a7a2d54da4397e73
font_02_sfnt_off00010ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE9 16544 bytes
SHA-256: 8d45f5f417e74c11d54eaee7138901bb4b2498e40dea16ccf89f2c2707c13e35