Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba00f48052b2975…

MALICIOUS

PDF

86.1 KB Created: 2021-04-11 23:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97a18225ac0a67eb6d9d91785f76c6e6 SHA-1: 2ef1fe2c7ce1b4bad6e4ae54f618af5937e7ec92 SHA-256: 1ba00f48052b29755440567a53cee32d8169814b37af70dd5f1bb4723bb8795d
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a potential lure for phishing or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the PDF structure suggest it's designed to redirect users to malicious sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=hi-point+c9+review
    • http://roxelejabojafe.scienceontheweb.net/icao_annex_14_deutsch.pdf
    • http://widaxaruko.mypressonline.com/83375741395.pdf
    • https://static.s123-cdn-static.com/uploads/4387061/normal_5fcaf810907b6.pdf
    • https://cdn.sqhk.co/navimoxa/ijMg3if/nixuf.pdf
    • https://nudezodubazez.weebly.com/uploads/1/3/1/1/131164524/3867871.pdf
    • https://vuduzilir.weebly.com/uploads/1/3/1/8/131857383/121cd4853a01c.pdf
    • https://jejademi.weebly.com/uploads/1/3/4/2/134266227/nidewutefule.pdf
    • http://prognoz-football.club/69844506721zx82w.pdf
    • https://lalemudisezevo.weebly.com/uploads/1/3/4/3/134359520/4a16d5ac.pdf
    • http://kerosijuvibeg.scienceontheweb.net/cefr_b1_tests.pdf
    • https://cdn-cms.f-static.net/uploads/4408709/normal_6047ce000893a.pdf
    • http://mixutadumekaje.mypressonline.com/70911313801.pdf
    • https://cdn.sqhk.co/rapigufagi/lhhhEb5/sword_art_online_creator_apologizes.pdf
    • https://cdn.sqhk.co/fikalibumi/b1jcigG/70827298169.pdf
    • http://creamwalls.space/50999370707s9vww.pdf
    • http://migerov.xyz/173512191931tozk.pdf
    • https://cdn.sqhk.co/jimavidozeze/hbOijjc/prison_break_season_5_episode_10.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/limewub/lozutoluwetap.pdf
    • https://s3.amazonaws.com/fizaxo/47987467943.pdf
    • http://fazovalekotevo.onlinewebshop.net/jubipejasufum.pdf
    • https://s3.amazonaws.com/zoluwivebiro/xozekajelomisoduzijidodip.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd20.bin
b5bb1dcadb94c7ffb428c945322bcffb57ccdfe300a249661d4d12e1390186ee
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD20 4808 bytes
font_01_sfnt_off00010daa.bin
7ceb6424f93d03af234353efd10d9d8bce782697d6d293f22b4a3720b8c0399f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10DAA 11760 bytes
font_02_sfnt_off000135f5.bin
9c0b324cb00f432843e7bf6aa6681d4ee1950797a85fd697fe0bc8b121e8710a
pdf-font-stream PDF embedded font (sfnt) at offset 0x135F5 16084 bytes