Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3f349cf27f0515…

MALICIOUS

PDF

77.4 KB Created: 2021-03-16 09:37:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2877f0501aef8fae9284ff2e551822ad SHA-1: 240ccbc9e24664f612a9b7ba0c6a4cc46f6d8e9e SHA-256: cc3f349cf27f0515fb9187a851106d0e01a38bc66a2b644266edb21d03bd467b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the presence of external URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://xezojetit.ru/strik?utm_term=do+we+have+free+will+bible+verse
    • http://filfex.ru/gozabubeziwuwujsvpu.pdf
    • http://marafonsport.site/rofugen4lvfs.pdf
    • http://legko.travel/86478840762yhpck.pdf
    • http://tryadasert.online/62011710794fpnka.pdf
    • http://cafechorsu.ru/zizopetmgjxi.pdf
    • http://chunyoo.com/willingness_letter_format_to_continue_the_jobnrs1z.pdf
    • https://cdn.sqhk.co/gebitasixa/PWJiijg/word_search_puzzles_free.pdf
    • https://cdn.sqhk.co/xolilipedeko/LjjXwC1/pinball_game_apps_for_windows.pdf
    • http://aarbuz.space/audi_a8_2010_owners_manualxtr44.pdf
    • https://cdn.sqhk.co/fekepazerox/Bid1Be0/zinokagenekojaxoxibevu.pdf
    • http://copyright-security-ig.com/858531006601hwwj.pdf
    • https://cdn.sqhk.co/firokizita/haLpB0R/vidmate_apk_for_android_4._0._4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://989244f3-426d-4557-b4f1-0018dac9047c.filesusr.com/ugd/57c819_f0404048b8a8436280153a68201d72ca.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f67f4b04-ae18-4b33-9342-c872413e4f02/86095363066.pdf
    • https://uploads.strikinglycdn.com/files/ea094c3e-3002-4b4f-a944-d8dc207fc713/70019745367.pdf
    • https://s3.amazonaws.com/fidobakipivogit/1954149612.pdf
    • https://50fe66f1-00be-429c-ab6c-57a9f80d6ab9.filesusr.com/ugd/39cb9d_26eb82a483394630b1375ed40e0aea18.pdf?index=true
    • https://0f8fedcd-12c0-4678-86f8-e2bff7269121.filesusr.com/ugd/70e7d4_3e40141734854799b43ab111487aaed2.pdf?index=true
    • https://s3.amazonaws.com/babuxufarizuxur/what_does_high_anion_gap_metabolic_acidosis_mean.pdf
    • https://s3.amazonaws.com/titugome/waxejusenamipufenaj.pdf
    • https://uploads.strikinglycdn.com/files/9ce691b6-2f9e-4b5c-9a55-d3d0646f42aa/jekesukigolaze.pdf
    • https://uploads.strikinglycdn.com/files/51b268ab-bb69-4eb4-a419-80ac795e1802/bapusojojutulemojinukepu.pdf
    • https://d0275d90-c5b4-4c72-b581-d0e2b62fc6dd.filesusr.com/ugd/ee54da_cc87a7e66b3e4b1688090ffaaeee9435.pdf?index=true
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_cdd7b2d9edb64266a1c0a6e374b2017f.pdf?index=true
    • https://s3.amazonaws.com/jedadokuti/brevard_county_gis.pdf
    • https://uploads.strikinglycdn.com/files/44b40f15-3c9b-4ae3-8048-64430a1cdf74/stressed_out_lyrics_twenty_one_pilots_meaning.pdf
    • https://s3.amazonaws.com/gitipelut/47298074778.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_off0000f00c.bin
bfb13e4337a141d69cf7e8c002ca9c5d4d1ba9d91583e19e3fd2e3c1ecf39d77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF00C 5144 bytes
font_01_sfnt_off000101a8.bin
7018025c713769f0d69d5ed61f3b4f64596e32127f2e33bc534471b51a310976		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101A8 11288 bytes

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