Malicious PDF — malware analysis report

Static analysis result for SHA-256 72cc2601b7185d76…

MALICIOUS

PDF

75.4 KB Created: 2021-03-25 13:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c34a2e7c86fac5da79fb00f44ce2a94c SHA-1: 093dffb7883e661df8e29d23d2def9cda01e0a00 SHA-256: 72cc2601b7185d76bcaa55bef3249edc4698acff48d06b2d5a64dbc142d0049c
134 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic findings point to the document acting as a link farm, with numerous external URIs and a disposable hosting pattern, suggesting it's designed to redirect users to malicious content. The presence of a download button lure further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/strik?utm_term=grade+5+sample+essay PDF link annotation
    • https://cdn.sqhk.co/fapiwejagiz/ejawNhi/sojezatefufomupiva.pdfIn PDF document text
    • http://vanimerukaguto.scienceontheweb.net/vurasepukutanagetamagoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/dafiwexoki/jfja3fD/best_superhero_movies_imdb.pdfIn PDF document text
    • http://kazexajisodibu.medianewsonline.com/55664017546.pdfIn PDF document text
    • https://cdn.sqhk.co/lajawawinu/ccz9if9/ruxaxoro.pdfIn PDF document text
    • http://pepirizibizedel.22web.org/swtor_sith_inquisitor_guide_5._0.pdfIn PDF document text
    • http://jetulugu.iblogger.org/les_misrables_movie_soundtrack_-_one_day_more.pdfIn PDF document text
    • http://tukakesafaj.iblogger.org/german_grammar_handbook.pdfIn PDF document text
    • http://bagawixaj.mywebcommunity.org/delazesefusetugodizaluz.pdfIn PDF document text
    • https://cdn.sqhk.co/tewisifupib/anMjacE/how_to_do_camera_magic_tricks.pdfIn PDF document text
    • http://farozemirig.scienceontheweb.net/anlise_de_dados_categorizados.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gorulilul.rf.gd/nunibabila.pdfIn PDF document text
    • http://lorenivi.rf.gd/90001294522.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/better_than_us_imdb_parents_guide.pdfIn PDF document text
    • http://gibexuge.rf.gd/19863051144.pdfIn PDF document text
    • https://edcb5511-827b-40b0-97c1-3499c313f96b.filesusr.com/ugd/0779a3_4559aeaec237420b846b65f28a7fd27d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xeponodij/spiderman_hd_wallpaper_for_mobile.pdfIn PDF document text
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_df3c700c479143878d23ec9773b7836f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/sazorafolexizabemuxafu.pdfIn PDF document text
    • https://b4095e1f-5e43-4c35-8b28-ff0c3185c247.filesusr.com/ugd/9cc3de_b8d3bae09aea497c85c4992e1f362f6d.pdf?index=trueIn PDF document text
    • https://217ba8a6-026c-4a9e-b1ce-2eadff0a4a08.filesusr.com/ugd/3d7af5_fc8d4d3d908b44c1aa5a48fcdc17af48.pdf?index=trueIn PDF document text
    • http://bifurul.rf.gd/the_developing_person_through_the_lifespan_7th_edition.pdfIn 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_off0000e307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE307 5360 bytes
SHA-256: 52b190637e4c5eda75d552d0c6bc3c12fbb464032a7f006e71a49bc805ac6949
font_01_sfnt_off0000f539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF539 13512 bytes
SHA-256: ebefe62afdb21b5ccc046324bdb702c8b137b1c6cf7c9657636d88b2d4f974f5

Open this report in the interactive analyzer, or submit your own file for analysis.