Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabd30f3f5e9b1d2…

MALICIOUS

PDF

86.3 KB Created: 2021-03-18 20:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec03f538c6b447194c7b0b6aefe6ef66 SHA-1: 9480fe164523adffc7f010f6d281ad814a99b1c9 SHA-256: fabd30f3f5e9b1d2ea4b930c4636fe6f35be4d685eb90d9bedc96e4741f18412
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain. Heuristics indicate it is a phishing attempt disguised as a certification guide. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a secondary payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/wix?keyword=sas+advanced+certification+prep+guide+pdf+download
    • http://soguged.22web.org/bopivezolupowenanonegasu.pdf
    • https://cdn.sqhk.co/vapezuwe/idhfif5/37292045155.pdf
    • http://idealica-ordina.site/cowboy_zombie_shooting_games_xbox_one5g8or.pdf
    • http://baranaydin.org/39593838473uiys0.pdf
    • https://cdn.sqhk.co/zosiwikiw/FgiQomy/83615257825.pdf
    • http://kulinar2020.site/83210584225zrj3y.pdf
    • http://zatawonilar.iblogger.org/6566558060.pdf
    • https://cdn.sqhk.co/vekuzajomugi/L0Uiegd/property_inspection_report_software.pdf
    • http://slimerecipe.org/what_is_von_mises_effective_stresskz45t.pdf
    • https://nifiwaratobiwe.weebly.com/uploads/1/3/5/3/135346776/9813235.pdf
    • https://cdn.sqhk.co/naxupowu/iqRjcQO/vepawaweses.pdf
    • https://cdn.sqhk.co/berazanoga/geghvwJ/mini_warriors_2_wiki.pdf
    • http://renavakurexiroz.22web.org/95653884860.pdf
    • https://rebodegumirimak.weebly.com/uploads/1/3/0/7/130775130/a70cb878a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vodupuginotipir.rf.gd/man_city_vs_watford_score_sheet.pdf
    • https://uploads.strikinglycdn.com/files/97f46219-2ed8-4dde-9293-07a5120343e9/how_to_make_a_book_jacket_out_of_paper.pdf
    • https://uploads.strikinglycdn.com/files/5aad4a6b-456b-4017-9cab-6409ac560ec0/dagubomajakituzo.pdf
    • http://tuzoxizusuzu.epizy.com/sezexejavelipelofenam.pdf
    • http://setiwol.epizy.com/tobumetilokepi.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_off00010da7.bin
d4eddd5f1cb70ed7c54fd1aa3e2aec48fffc7eab6e17499cf3233355e4684a32
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA7 5576 bytes
font_01_sfnt_off000120ca.bin
30bcdd440a46dc672f5f72787d4f6752fcc9aebac25fcbbd2f8ed4ce5a96d87b
pdf-font-stream PDF embedded font (sfnt) at offset 0x120CA 12112 bytes