Malicious PDF — malware analysis report

Static analysis result for SHA-256 207f81effc2b4d1b…

MALICIOUS

PDF

66.6 KB Created: 2021-02-05 23:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c2022a4f577c4a1ecfe872e81bb7522c SHA-1: 1f6e87e618485094a62d28c02ff304f9f150864e SHA-256: 207f81effc2b4d1be0dfda2c1b60e2a26683756b029255ca5701bdf3e4e2cdf1
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=dust+in+the+wind+tab+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4420037/normal_5ff22d62552f9.pdfIn PDF document text
    • http://pe50off.info/new_bollywood_silent_songsgn7ax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426556/normal_5fd2262960db5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447089/normal_5feb628384adb.pdfIn PDF document text
    • http://blubadgehelp.net/geometric_patterns_worksheet_4th_gradesja19.pdfIn PDF document text
    • http://winfreeiphone.xyz/tv_channel_logo_quiz_answersarcui.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485321/normal_5ffa32c9428c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bajobakokela.epizy.com/tamilgun_baahubali_2_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/agnisakshi_serial_song_in_telugu_free.pdfIn PDF document text
    • http://wijogural.epizy.com/59730642965.pdfIn PDF document text
    • http://fegidil.rf.gd/acrobat_9_pro_mac.pdfIn PDF document text
    • http://wojixefem.epizy.com/54239818479.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/bob_marley_one_love_ringtone.pdfIn PDF document text
    • http://mexesumofiruvaf.rf.gd/weather_report_in_hyderabad_pakistan.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/5969305494.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_off0000c6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D8 5232 bytes
SHA-256: 71b4e03979bc696b2bfbb00841bd4b662400885e10bef2dd29a5f673e5e6110e
font_01_sfnt_off0000d8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BA 11356 bytes
SHA-256: fa3ff369f371e2f58e05353f13efb8f4d4996916adb9cacc556a8da9261fa9df