Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa241079a0d7083…

MALICIOUS

PDF

71.1 KB Created: 2021-02-21 12:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d45bf1c0ee4d82cdbee7d57bb07af73d SHA-1: 17408d98aceb6af9fbeb1a7506eb55a90a5adb50 SHA-256: caa241079a0d7083bc4b173c482989fbcd8063f41b28f1465c0c783dd65b7031
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=arduino+wifi+module+projects PDF link annotation
    • https://cdn.sqhk.co/gimanoretev/aOjdeje/hundred_years_war_duration.pdfIn PDF document text
    • http://patewukezevo.iblogger.org/triangle_symbol_android_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504791/normal_60221ea225ef0.pdfIn PDF document text
    • https://cdn.sqhk.co/nunemiziku/YD1dSXZ/jibed.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/kjejaje/forge_of_empires_best_city_defense_ema.pdfIn PDF document text
    • http://hookup668.site/601229599930lift.pdfIn PDF document text
    • http://takudogifox.22web.org/ffxiv_summoner_job_quest_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/texafikogot/qjcgeKg/gurk_the_8-_bit_rpg_apk.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/lokijuronig/surar.pdfIn PDF document text
    • http://disidigepaxu.rf.gd/berichtsheft_ausbildung_vorlage.pdfIn PDF document text
    • http://faruvesisok.rf.gd/gajaz.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/committee_nomination_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/74630384459.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/41581479871.pdfIn PDF document text
    • http://xilutetixu.epizy.com/jokolabusululuxenaji.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_off0000da96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA96 5248 bytes
SHA-256: 9dcae851af0ca885e6fe1a48e399d959f3ed8119f079bfdc1b3cf4f5e62835fe
font_01_sfnt_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 10304 bytes
SHA-256: d3e58fb195578e4a0e6c9ed203da56003c877e6ddf70c10efeaac377c0d8e7c9