Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d4025e8bd41482…

MALICIOUS

PDF

77.0 KB Created: 2021-03-14 13:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d696fc0ca11c9c099582b4f067d37aee SHA-1: 5d7c271c75682df9ef0a60cdcb43ee34001ec114 SHA-256: 79d4025e8bd41482b201ba3f76b01f34ffcf10607362416804b728b3f117b070
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/strik?utm_term=how+to+ask+a+godparent+poem PDF link annotation
    • http://dfwshootersupply.com/93626343170qlh6c.pdfIn PDF document text
    • http://talebakela.iblogger.org/98706141602.pdfIn PDF document text
    • http://fastcreditreport.info/94235163089w5lhg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/45386aa3-847a-4cb8-8d40-162c9509693b/what_is_self_reliant_mean.pdfIn PDF document text
    • http://jefuzogal.epizy.com/google_sheets_reference_another_sheet_range.pdfIn PDF document text
    • http://xiwabave.rf.gd/jipatajafotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992dfa44-7178-4899-a6fb-2af6f9c3ac5e/romeo_and_juliet_statute_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/fajaposanatodovosozu.pdfIn PDF document text
    • http://votaveliratelom.epizy.com/disney_intro_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af1eafa-5356-4bba-845b-ee158e935e46/49481913301.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/bambanani_high_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/agency_agreement_template_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/ninapepulerodovejik.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/abcd_malayalam_movie_bgm_ringtones.pdfIn PDF document text
    • http://rezutapigad.rf.gd/equifax_credit_report_for_deceased_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/epson_wf-2540_is_not_printing.pdfIn PDF document text
    • http://pomigipasa.epizy.com/dekra_gebrauchtwagenreport_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/9098673541.pdfIn PDF document text
    • http://nupakavidowux.epizy.com/pevelegujenibukurateb.pdfIn PDF document text
    • http://gakuxidufujun.rf.gd/wusibew.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E9 5104 bytes
SHA-256: 03ad9ae7f9aae19a37e70e50cf16e16116a9eeebf2ae22042022ca347a3a4d62
font_01_sfnt_off0000f53b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53B 10288 bytes
SHA-256: 150199a4e4111892aad357fd3e211ed1147ba8d5f3c768f39578ba8c572ed003
font_02_sfnt_off00011883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11883 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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