Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b9e3d2adc5f978…

MALICIOUS

PDF

68.6 KB Created: 2021-03-14 03:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1ba228e723ac4eff320137fbe4b6be8 SHA-1: d9ec55607399b90d813e385bdb19a7c939ae27c8 SHA-256: 46b9e3d2adc5f9788915d0449287fa67303a774fa9e1612927a071305e575ab7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI that points to a URL designed to appear as a search result for a free PDF download. ClamAV and ML classifiers have identified this file as malicious, specifically a phishing trojan. The primary IOC is the external URI used to lure the user, which likely leads to a malicious download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/strik?utm_term=life+after+life+raymond+moody+pdf+free+download
    • http://tonojodozif.mypressonline.com/34263830794.pdf
    • https://cdn-cms.f-static.net/uploads/4483075/normal_5fd67eb7efabb.pdf
    • https://static.s123-cdn-static.com/uploads/4406775/normal_5ff08da2d1223.pdf
    • https://static.s123-cdn-static.com/uploads/4382793/normal_5ff06aec3fb2f.pdf
    • http://kimujedat.mygamesonline.org/suwiripubowosewexa.pdf
    • http://zurivupubidej.iblogger.org/36290004995.pdf
    • http://pawomodom.medianewsonline.com/administracion_financiera_contemporanea_moyer.pdf
    • https://zonuloxovuge.weebly.com/uploads/1/3/4/4/134469127/zemef-zebumeruj-kuxejotusewo-voniz.pdf
    • http://vagiburenumow.iblogger.org/skype_for_business_meeting_invite_template.pdf
    • http://tapidiv.medianewsonline.com/77065831175.pdf
    • https://cdn-cms.f-static.net/uploads/4408701/normal_60107ab2198be.pdf
    • https://static.s123-cdn-static.com/uploads/4370078/normal_5ffd458bbc7f6.pdf
    • https://girezerel.weebly.com/uploads/1/3/1/0/131070389/d0f45003637d189.pdf
    • http://wavasesinile.22web.org/number_in_words_in_crystal_reports.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dusetelonuzaj.epizy.com/mezosij.pdf
    • https://s3.amazonaws.com/tarajix/nadatezujunedelafe.pdf
    • https://s3.amazonaws.com/pibabopuduj/sample_resume_format_for_biotechnology_freshers.pdf
    • http://jilutuve.rf.gd/doubles_plus_one_worksheets_second_grade.pdf
    • https://s3.amazonaws.com/lakujusitejojet/poomuthole_piano_notes.pdf
    • http://nivutegem.epizy.com/pest_analysis_sample_report.pdf
    • http://bajipodi.epizy.com/how_many_calories_in_a_fresco_taco_from_taco_bell.pdf
    • http://kizibezodijaw.epizy.com/83232960389.pdf
    • http://vejesigivilowen.rf.gd/who_is_generally_considered_to_be_the_father_of_western_philosophy.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_off0000ce5a.bin
4d248d7310618b511796786907420a511ee0ddc69de5cf2087bd1a9a76c3a090
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5A 5144 bytes
font_01_sfnt_off0000dfe4.bin
f232f0c164fa0905729576eb3f4a6fe244537f6a489d93eebdaefb8591b9d634
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE4 11092 bytes