Malicious PDF — malware analysis report

Static analysis result for SHA-256 73abfba6ea9bb410…

MALICIOUS

PDF

77.1 KB Created: 2021-02-27 09:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e0370267982dfd696be14db6e6449eab SHA-1: 46d6db14616d4a816bfae192b55be1a5f43f1f59 SHA-256: 73abfba6ea9bb410e6356c33f8f65edfe52f7ff4dd0b51998f252a27baf3893c
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a Stanley Fatmax power station manual, which is highly suspicious given the file's malicious verdict and the presence of an external URI pointing to a potentially malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URI is the primary indicator of compromise.

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://leonvi.ru/123?utm_term=stanley+fatmax+1000+peak+amp+power+station+manual PDF link annotation
    • https://cdn.sqhk.co/jerivudofin/jajggfW/89541031432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413848/normal_5fe75a54b44f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370778/normal_5ff80199c65d7.pdfIn PDF document text
    • http://kekisire.22web.org/splash_screen_generator_android_online.pdfIn PDF document text
    • http://dazipuv.iblogger.org/rodixijegi.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/retufopejabodilu.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/wugdhbV/50893726815.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/dell_optiplex_9010_aio_power_supply_replacement.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/lavipefanasimafuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486356/normal_601a00e319809.pdfIn PDF document text
    • https://cdn.sqhk.co/kelarega/gkfiiXz/37179414719.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/igjgehc/bright_yellow_finch_colorado.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tunawibiga.rf.gd/pejewevexejub.pdfIn PDF document text
    • http://mofikasim.epizy.com/loraxumilelimamemaxawom.pdfIn PDF document text
    • http://sonisan.epizy.com/21072931965.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/ubuntu_desktop_32_bit_iso_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/tapazig.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/andrew_wommack_events_2020.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/ejemplo_de_contrato_de_arrendamiento_de_terreno.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/begolusadobijirifomap.pdfIn PDF document text
    • http://jaxovisujopav.rf.gd/jodikobelemamavubaxek.pdfIn PDF document text
    • http://gafodix.myartsonline.com/list_of_best_inorganic_chemistry_books.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_off0000ee7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7D 5668 bytes
SHA-256: 6f43240fa588130ed3fffb0dfab253c5ce469a50089a1537c03e571149ea4bca
font_01_sfnt_off000101d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D9 10760 bytes
SHA-256: 7f588f29e6d05f8a26b528dc00b3ff76c25c527e25c544036073438ffa64d281

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