Malicious PDF — malware analysis report

Static analysis result for SHA-256 f402808d883a910b…

MALICIOUS

PDF

94.9 KB Created: 2021-03-22 20:25:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 620d899370d5b67716baab8ac7809dac SHA-1: d5a7ade094f1b3c9345a0c68e39fad4feec982eb SHA-256: f402808d883a910be0b742970ff43a8462ba2427f0083d10be76c877aafa84d9
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that lead to suspicious domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs within a PDF, combined with the high confidence score from ML and AV, points towards a phishing lure designed to redirect users to malicious content.

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://pelibifir.ru/strik?utm_term=why+won%2527t+my+keyboard+work+on+ps4
    • http://leomannapov.com/missingno_ghost_form_pokemon_card5uqor.pdf
    • https://static.s123-cdn-static.com/uploads/4417986/normal_5fcd58f020106.pdf
    • http://gajonedorebuko.mywebcommunity.org/income_tax_amendments_for_ay_2020_20_icai.pdf
    • http://bukuxojunuz.mypressonline.com/haber_process.pdf
    • https://cdn.sqhk.co/sowodopevew/fzOieSF/radio_21_live_romania_online.pdf
    • http://probnik1313.tech/friends._s01._bluray-_remux._1080p_torrentpzhdq.pdf
    • http://classkaod.ru/64062387247ovjjj.pdf
    • https://cdn-cms.f-static.net/uploads/4447915/normal_6014665d6b3c3.pdf
    • http://toportt.online/a_tempest_by_emily_dickinson0mkes.pdf
    • http://gagimubu.mywebcommunity.org/66626415629.pdf
    • https://cdn.sqhk.co/mapiwoda/hfjdDJJ/9385132806.pdf
    • https://cdn-cms.f-static.net/uploads/4393763/normal_601faa00e7a1e.pdf
    • https://static.s123-cdn-static.com/uploads/4379489/normal_5fcf1d97599d7.pdf
    • http://natorg.fun/translucent_paper_sheetsw0uz4.pdf
    • http://keksik24.ru/fuvimobupubugerd7chw.pdf
    • https://cdn-cms.f-static.net/uploads/4471099/normal_601e36356c586.pdf
    • https://cdn-cms.f-static.net/uploads/4384469/normal_6054ffb75e9a9.pdf
    • https://cdn.sqhk.co/pizililiv/iikzKMR/xuxujifelodupututanarol.pdf
    • https://cdn-cms.f-static.net/uploads/4413345/normal_601e962a35831.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off00012f76.bin
eff43bcd5de379b90a7bba29fa8639b3b3039f604aa27b4dcd67ed566f1bc7de
pdf-font-stream PDF embedded font (sfnt) at offset 0x12F76 5700 bytes
font_01_sfnt_off000142df.bin
0f335fa95339a1e48de53ee9362bac4562325458545e32f17560b0272a7d057d
pdf-font-stream PDF embedded font (sfnt) at offset 0x142DF 12792 bytes