Malicious PDF — malware analysis report

Static analysis result for SHA-256 14020fc3a53bac29…

MALICIOUS

PDF

77.1 KB Created: 2021-03-26 11:06:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0487ca7fde01d06047ce54b12b4616dd SHA-1: 8d85bd4a220a7d3d6b408acb22215a41fcba2963 SHA-256: 14020fc3a53bac2996f0fed2fd11e0673fc612f9280b7debaac9b92cabe4b7f0
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body and embedded URLs suggest a lure to external websites, likely for phishing or malware delivery. The presence of numerous external URIs and link farm characteristics further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://nipisod.ru/wix?keyword=vehicle+dependent+expedition+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402297/normal_600dc5c31a3e3.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://4gusevshop.space/arboretum_board_game_rulesb17s4.pdfIn PDF document text
    • http://wamipivifubape.sportsontheweb.net/lesoes_precursoras_do_cancer_de_colo_de_utero.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_5fd09ef970f60.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/xabofugeletudedubuverazo.pdfIn PDF document text
    • http://jovepodixowofow.mygamesonline.org/geometric_series_word_problems_with_answers.pdfIn PDF document text
    • http://faceskinagainbeauty.xyz/18967429792zbkwx.pdfIn PDF document text
    • http://pimebujeben.66ghz.com/honda_crv_2018_android_auto_not_working.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/tokyo_ghoul_season_3_intro_song.pdfIn PDF document text
    • https://mosejibufo.weebly.com/uploads/1/3/4/4/134437632/9819fda.pdfIn PDF document text
    • http://pinezotamex.getenjoyment.net/57350063142.pdfIn PDF document text
    • https://zuveravovizopow.weebly.com/uploads/1/3/0/9/130969477/3960009.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426813/normal_5ff26e8a8eec0.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/3be19c9bfa.pdfIn PDF document text
    • https://liwitozawaben.weebly.com/uploads/1/3/4/0/134042828/17ed5dcc.pdfIn PDF document text
    • http://hookup157.fun/haynes_manual_toyota_aygoj3bi9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_8ea9da0a72be49e98b2bf9940af70e50.pdf?index=trueIn PDF document text
    • http://mimewimirul.rf.gd/goxatuzuvorigasuseg.pdfIn PDF document text
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_5f7bc04b63394e9ca486d0fc3a957fd6.pdf?index=trueIn PDF document text
    • https://0fc0baf9-b884-4fcd-968e-f93c0f938930.filesusr.com/ugd/68ec51_614e4c95503346259bf35a607f49bfa5.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B7 4884 bytes
SHA-256: d8d482dab1289b8e4a20fb4ebabec76a8bd6e3c9146799a47e97e58ad335aae7
font_01_sfnt_off00010162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10162 11136 bytes
SHA-256: fe1d0e8a4906467ed52e169c0d99535cbba873a6c5490a4b58c8d2a8e5e75331

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