Malicious PDF — malware analysis report

Static analysis result for SHA-256 6337658da4a6f63c…

MALICIOUS

PDF

71.0 KB Created: 2021-03-16 09:34:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a71cf992c9a26984f66de4636921ffc2 SHA-1: 2926edbfe94d24718e4a94d141bf75fddce2b45a SHA-256: 6337658da4a6f63c221fb7ac1d7c76adf71930133e12f20105a470a7c4e33a29
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'organic chemistry' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/123?utm_term=a+guide+to+mechanism+in+organic+chemistry
    • http://bibopasaxuvibu.mypressonline.com/30174175559.pdf
    • https://cdn.sqhk.co/xakurusuk/jehgjjM/novukabafif.pdf
    • http://normal-id.com/37815114453x0cn7.pdf
    • http://businessoutsourcing.info/4588425570sdp15.pdf
    • http://fullcreditreport.info/7456078807lle3s.pdf
    • https://cdn.sqhk.co/segevenujuka/hiTV5he/mobile_legends_adventure_cd_key_july_2020.pdf
    • http://akfb.online/wunodenegufapalegowixee215c.pdf
    • https://cdn.sqhk.co/wenegifuteg/e1coWYy/pexidalonul.pdf
    • http://biomanix.best/setolewaxibatufedu0qlmz.pdf
    • http://manidat.sportsontheweb.net/carnatic_music_basics_theory_in_telugu.pdf
    • http://kunozoxutokusu.mygamesonline.org/the_bondmaid.pdf
    • http://cyberlife.store/fujirepajevawulu6v5lr.pdf
    • http://vvinorama.website/difavebonojedezath2mu.pdf
    • https://cdn.sqhk.co/wexunaveb/jbbecLc/sisafobawipi.pdf
    • http://waxedeb.getenjoyment.net/is_the_ball_allowed_to_bounce_twice_in_ping_pong.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fekamenuzexogam.epizy.com/towopabezeloxa.pdf
    • http://tunufefenus.rf.gd/dr_browns_deluxe_bottle_sterilizer_reviews.pdf
    • https://uploads.strikinglycdn.com/files/89d963df-6d2a-46c1-aa23-a523efa5dbd3/katesuxixalu.pdf
    • https://uploads.strikinglycdn.com/files/fa40eb0b-ec55-4f21-97b3-b56fd5b2090f/lukosifeburuladuka.pdf
    • https://uploads.strikinglycdn.com/files/e17494ac-d0a2-484e-b5d5-617f67d20ebf/don_juan_demarco.pdf
    • http://dapufojutujat.atwebpages.com/batman_the_dark_knight_returns_30th_anniversary_edition.pdf
    • http://dejogamolefip.rf.gd/rofusebabekufojuwe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8aa.bin
30f50fa45fe4149694ebda590d84b2f980cc2c56ebc0b79d956262f2df732953
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AA 5412 bytes
font_01_sfnt_off0000eaf2.bin
41b280bace52fc49f24fc43ef25986def51ccb4cd8bb6b098a9182362e8aecc9
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF2 10396 bytes