Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f00181b34db4a48…

MALICIOUS

PDF

69.2 KB Created: 2021-03-07 02:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 64ed61010cb36cc23d32a36120432cf4 SHA-1: bb9ae1ab809f320304b443aeff8c7996b4db4037 SHA-256: 6f00181b34db4a48a3b10caef27a26f400626be9e2d27e6d38fc57bfd043d6d0
104 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, contains text suggesting an urgency lure, which is a common tactic for phishing campaigns. The presence of an external URI and the ML classifier's high confidence score indicate a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/strik?utm_term=proscan+plded3273a-b+remote PDF link annotation
    • http://pelinebaj.mypressonline.com/94552602018.pdfIn PDF document text
    • http://jepenufi.getenjoyment.net/what_are_the_rarity_symbols_on_pokemon_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugituxi/iijaQje/mikan.pdfIn PDF document text
    • https://cdn.sqhk.co/gepumenujeme/sjdjdvp/56351716942.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/jQjeGjh/cara_call_of_duty_mobile_indonesia.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/jhjaIfQ/song_hit_70_80_90.pdfIn PDF document text
    • http://zopetiwan.22web.org/lukobajulesowigox.pdfIn PDF document text
    • http://7gusevshop.space/mamiya_rz67_pro_ii_for_sale9vax9.pdfIn PDF document text
    • http://am-sound.ru/san_cassiano_italy_snow_reportum6p2.pdfIn PDF document text
    • https://cdn.sqhk.co/gufojakig/dMSgrha/26627060338.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/basics_of_biblical_hebrew_vocabulary_cards.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/gawabog/identifying_expressions_and_equations_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/domivawetamekisasuxejoxaj.pdfIn PDF document text
    • http://fakefujakarip.rf.gd/microsoft_sql_2019_licensing_guide.pdfIn PDF document text
    • http://kodireso.epizy.com/binufom.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/supusuj.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/33829426503.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/airtel_broadband_bill.pdfIn PDF document text
    • http://tofezaniv.rf.gd/activator_office_2016_bagas31.pdfIn PDF document text
    • http://fojoxolizono.rf.gd/iphone_calendar_answer_cannot_be_sent.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/wadexurebuvipoguwax.pdfIn PDF document text
    • http://jifisuxevizek.myartsonline.com/91179605145.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/aristocracy_form_of_government_definition.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_off0000cf4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4A 5768 bytes
SHA-256: 9ed4f2d1e6717d40a755d22823be579123beb52aa2a4398c136f17ac943b4960
font_01_sfnt_off0000e2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DF 10868 bytes
SHA-256: 0ed6e07c0895c2459a3e226fedc0289f4d9a522ccac414aa4f3ff020d6d1b625

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