Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c3b864e440f5b9…

MALICIOUS

PDF

70.8 KB Created: 2021-03-25 15:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c62cd59b374a307f50de37e1385a38e SHA-1: 29644a863aa9cbabda923168eef933a3c845c431 SHA-256: 76c3b864e440f5b9b498b473c9b30908a57749274de2636b1c8f0dd97d467960
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious File

The sample was flagged by a machine learning classifier and ClamAV as malicious. It presents a fake CAPTCHA to trick the user, a common tactic in phishing and scam campaigns. The embedded URL `https://soxebez.ru/wix?keyword=paypal+money+adder+termux` suggests a lure related to financial scams or potentially credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://soxebez.ru/wix?keyword=paypal+money+adder+termux
    • http://sokolov.fun/clash_of_clans_hack_free_coc_gemsenv8q.pdf
    • http://constructionhouse.info/29441194548cxhj8.pdf
    • https://cdn.sqhk.co/dabozijide/ji3rige/arcade_donkey_kong_junior.pdf
    • http://texno3ua.com/altec_lansing_life_jacket_2_wattsggm2t.pdf
    • https://cdn.sqhk.co/butaliwe/hfieugg/acellus_homeschool_parent_login.pdf
    • http://losqutoq.online/mamalaxh5txo.pdf
    • http://idealslim-ordina.site/insurgent_full_movie_hdpopcornjkutk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xabalaru/mathematics_in_the_modern_world_answer_key.pdf
    • https://s3.amazonaws.com/resisuna/universidad_del_tolima_sede_bogota_tunal_telefono.pdf
    • https://s3.amazonaws.com/dikomavomem/pitiwotomiforazegeloke.pdf
    • https://s3.amazonaws.com/dorobukasawituw/excel_2010_nur_bedingte_formatierung_kopieren.pdf
    • https://s3.amazonaws.com/muvazi/font_awesome_5._8._1_cheatsheet.pdf
    • https://s3.amazonaws.com/genedonapubefe/33105958172.pdf
    • https://s3.amazonaws.com/jubiferekaka/92177455006.pdf
    • https://s3.amazonaws.com/tasufagijaremo/antonyms_words.pdf
    • https://s3.amazonaws.com/fizup/87870426106.pdf
    • http://polabufu.myartsonline.com/mipaloxufi.pdf
    • https://s3.amazonaws.com/tabobujimo/safekase.pdf
    • https://s3.amazonaws.com/sirilagewuga/nugesuxidiwagadobi.pdf
    • http://namakanexir.atwebpages.com/bailey_and_love_27th_edition_volume_1.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb9.bin
2774da09b8fef431e52cb3a0f92eae0afdac40092657cc37e388d47e542831da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB9 5100 bytes
font_01_sfnt_off0000dffb.bin
bb49d2c6b0062a2fd8e36b648f9581ab0b9818761833ff21810b8aa8be3e8a6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFB 2664 bytes
font_02_sfnt_off0000eb4b.bin
a97e2cced227f8650e977531bf3d9244877e02affc0881d4034937490c696a62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4B 10088 bytes

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