Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74718b13301b2f7…

MALICIOUS

PDF

91.4 KB Created: 2021-05-18 01:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 88cf4c9a2260c455619d1b8885413b96 SHA-1: ee95c04570881c4e01efb599de8cf78f589f9f15 SHA-256: d74718b13301b2f719d5c4bc4a8d9151ce3ed134fc1b21a881253a4db189c817
154 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The presence of embedded URLs and the 'SE_INVOICE_LURE' and 'SE_CALLBACK_LURE' heuristics suggest a phishing attempt, likely directing users to a malicious site via the primary URL. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jumiwimov.ru/strik?utm_term=can+you+return+at+academy+without+a+receipt PDF link annotation
    • https://zetozegazironik.weebly.com/uploads/1/3/2/6/132696155/gotedade.pdfIn PDF document text
    • http://titopemij.22web.org/crane_drop_humidifier_red_light_no_mist.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474979/normal_60347dd06caa5.pdfIn PDF document text
    • https://padokerasuwo.weebly.com/uploads/1/3/5/3/135319223/9071127.pdfIn PDF document text
    • https://repowuvosifopel.weebly.com/uploads/1/3/6/0/136050091/botalabe.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/8474511.pdfIn PDF document text
    • https://lumuvimusu.weebly.com/uploads/1/3/4/7/134719948/jetevudiloxitab-nalegi.pdfIn PDF document text
    • https://pojekemo.weebly.com/uploads/1/3/4/4/134469054/5d5037ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424029/normal_6008e5f23e9f4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gonoluripep.rf.gd/learnsmart_answers_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5f1243d-0de4-4184-9746-4123bc341ee8/bagofikuwivebijop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38430feb-72e8-4173-9de8-8e0ef9c530fc/pigezugapuxipobit.pdfIn PDF document text
    • http://mubapumasas.epizy.com/xunomirakibimajug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a99e403c-4375-48db-ba49-e6e743f2f517/serejukaxigis.pdfIn PDF document text
    • http://wipojijize.rf.gd/multiplication_chart_1_12_printable_with_answers.pdfIn PDF document text
    • http://sitalagok.rf.gd/introducing_phonetics_and_phonology.pdfIn PDF document text
    • http://vekujekodabudu.epizy.com/best_indian_history_podcasts.pdfIn PDF document text
    • http://gazolisusebo.epizy.com/call_me_by_your_name_movie_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e3e9445-8b17-4b73-b3b5-6abca88d0b24/how_to_set_up_airprint_on_epson_wf-3640.pdfIn PDF document text
    • http://zatopava.epizy.com/krisflyer_miles_redemption_guide.pdfIn PDF document text
    • http://jimomug.rf.gd/toshiba_voicemail_reset_code.pdfIn PDF document text
    • http://topagujowulefe.epizy.com/57488436450.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_off000127d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127D5 5204 bytes
SHA-256: b06a6d2f46cb3b353be6153e85be1e3e2d766a49e4d5928b1cf9e44e0d273d18
font_01_sfnt_off00013970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13970 11180 bytes
SHA-256: 7b80c71bdc336d2483dc66347881c399e1d17fa599efd7ac14464f11224eddd6