Malicious PDF — malware analysis report

Static analysis result for SHA-256 895b98a77d7416f7…

MALICIOUS

PDF

82.2 KB Created: 2021-03-16 22:10:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d169a78209887958cabdeefbc07ced2 SHA-1: 558da8cef05ff9fc79d5c431e2387823ab26011e SHA-256: 895b98a77d7416f72aed14c65366a3d1aef33e5aeae956e7e94e69e0a4a835dd
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to a domain suggestive of an award or score. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

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://maypoin.ru/award?keyword=balthazar+score+pdf
    • http://instapriz365.site/xekawopekovigukavisomy7ey.pdf
    • http://yazansoft.com/grade_11_english_textbook_download69kbz.pdf
    • http://calipshatngaccs1.xyz/53232549007xmtrh.pdf
    • http://pollsexpert.com/webkinz_cheats_for_estore_pointsabh6a.pdf
    • http://sdfafq.info/when_you_pray_for_rain_deal_with_the_mud_moviez7pjx.pdf
    • http://cosmeteca.com/best_romantic_caller_tune_in_tamilqpy2t.pdf
    • http://tk-pobeda.site/language_of_the_godswbk00.pdf
    • http://fitokapss.xyz/vega_muhasebe_program_full_indir2wq9d.pdf
    • http://kadesevi.iblogger.org/17802534847.pdf
    • http://redirunna.xyz/angular_form_validation_pattern_examplenk7hs.pdf
    • http://xojuxelase.medianewsonline.com/who_has_the_best_deals_on_gas_grills_right_now.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/5f73919c-aa8b-4812-a2f7-3305b535f564/foundations_of_finance_8th_edition.pdf
    • http://gajutovowitexij.rf.gd/intermediate_accounting_1_valix_2020_solution_manual.pdf
    • https://uploads.strikinglycdn.com/files/c3bc201c-ef8c-4ff2-9be3-baf564cef729/ridixoladipodemew.pdf
    • http://pusapovewazigu.onlinewebshop.net/moxinesulevemejape.pdf
    • http://nonulalomijowo.epizy.com/publicly_traded_partnership_k-_1_reporting.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f54a.bin
c026daa202b37e8ef4e838d964a584ceb48c4427b7b3656fa78fc0b7e9597f76
pdf-font-stream PDF embedded font (sfnt) at offset 0xF54A 4976 bytes
font_01_sfnt_off0001064c.bin
20cdad44903c03d881732c5635a542752c256b77b657a5ac5c8d62571ccb530c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1064C 11260 bytes
font_02_sfnt_off00012ca2.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA2 4324 bytes