Malicious PDF — malware analysis report

Static analysis result for SHA-256 c058f27909d30b15…

MALICIOUS

PDF

71.6 KB Created: 2021-02-02 21:28:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2dbbb117a0e45c395a8d196cafcecdf9 SHA-1: 7c1f5cb9d8992b11d71c58ad686e9d599644bc85 SHA-256: c058f27909d30b1562c1b6cccea2826a3a1f831f6837d09e0f027b7343f2113d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/aws?utm_term=acetic+acid+market+pdf PDF link annotation
    • https://cdn.sqhk.co/luxixumogez/coHjc6O/alphabet_song_jack_hartmann_workout.pdfIn PDF document text
    • https://demenuxukuxit.weebly.com/uploads/1/3/1/4/131438289/rozulaxeminoni-fajudud-wivonusawixigor-lomewatavako.pdfIn PDF document text
    • https://xatiletovolut.weebly.com/uploads/1/3/1/4/131409128/c06dec1a9e2.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/gxEE6gf/shadow_hero_stickman_legend_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zenetofuma/ijVijif/newikibatukujupogubadej.pdfIn PDF document text
    • http://salestore.pro/58014446386s5zqz.pdfIn PDF document text
    • http://rrrrkkkkk.space/cyberpunk_2077_wallpaper_phoneqgbi1.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/jFji0Jn/zombs_royale_aimbot_no_download.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/a4ehbja/zarurunelul.pdfIn PDF document text
    • https://zuzedunili.weebly.com/uploads/1/3/4/4/134460484/bajiwin_zadijijari.pdfIn PDF document text
    • http://yblda.fun/vavodamezoxujokana9lrxc.pdfIn PDF document text
    • http://tk-pobeda.site/97863382947b2jh9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://letulirabe.epizy.com/72891742415.pdfIn PDF document text
    • http://jamosafiseb.rf.gd/kisijilakuvivu.pdfIn PDF document text
    • http://bajipelorisu.rf.gd/irregular_verbs_quiz_with_answers.pdfIn PDF document text
    • http://boraxatisota.rf.gd/bearing_failure_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/cuissardes_beige_missguided.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/informational_text_4th_grade_worksheets.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_off0000da64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA64 5144 bytes
SHA-256: 10648ae17e6452489808d9855cb9331fe314506c2856692a28548d926915d884
font_01_sfnt_off0000ebd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD7 11132 bytes
SHA-256: f4e8e5a53b9fc3a4bf4c0a55018d7dd4de488ae58432fbe507fe51df21ab8f32

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