Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b2fdcf4ed44cf4…

MALICIOUS

PDF

78.5 KB Created: 2021-03-21 06:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5fd1e0c56160b1aac9e4738cd23d702 SHA-1: 7a7b33d272fb1873f48000341079047928620ae7 SHA-256: f2b2fdcf4ed44cf4e71a3cb97fb9cf137c35e767dc27c0e86c8ae347c7652d32
136 Risk Score

Malware Insights

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

The PDF contains a clear lure for pirated software, indicated by the document body and the primary external URI. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of a security bypass heuristic further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://jacksth.ru/strik?utm_term=ms+project+2019+free+download+64+bit+with+crack
    • https://cdn.sqhk.co/gapevusa/hh4hgid/world_market_outdoor_furniture_reviews.pdf
    • http://flash-sar.online/marksheet_number_mumbai_universityskeam.pdf
    • https://kodavagimiwebod.weebly.com/uploads/1/3/5/3/135346487/1894269.pdf
    • https://fadoxidibeja.weebly.com/uploads/1/3/2/6/132695582/woxojotuzema.pdf
    • http://sfhgfje5df.xyz/78799273228ay1l9.pdf
    • https://gofubajub.weebly.com/uploads/1/3/4/6/134632898/25d537b273.pdf
    • https://cdn.sqhk.co/vivepovugeli/hiEgckh/psoriasis_symptoms_skin.pdf
    • https://cdn.sqhk.co/norumuwapa/QbCejfp/zafopeku.pdf
    • https://cdn.sqhk.co/jigavozef/eRhdjhO/download_game_stick_z_archer_mod_apk.pdf
    • http://uablog.site/jabutonafqxw5k.pdf
    • http://pevewoxoxup.scienceontheweb.net/fusefudasopivozo.pdf
    • http://segwaywheelchair.ru/11798370779vuvrh.pdf
    • http://rowexusaje.mypressonline.com/vivukujezumaxefevekepam.pdf
    • https://menesifewo.weebly.com/uploads/1/3/0/8/130814293/pupemo.pdf
    • http://tozidak.mygamesonline.org/duwixunerixawopifirapiba.pdf
    • https://ritefebeg.weebly.com/uploads/1/3/5/3/135316582/pematakej.pdf
    • http://copyrightnotice-ig.com/jibizeferikanejiseptqkhl.pdf
    • https://cdn.sqhk.co/podidiwi/5kQzxZs/gedodulapujifamejejusud.pdf
    • http://wikotimu.scienceontheweb.net/2014_mazda_3_sport_owners_manual.pdf
    • http://timogefubor.22web.org/talejatibovizokon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xomosim.epizy.com/on_the_banks_of_plum_creek_chapter_27.pdf
    • http://dajovomofoziso.rf.gd/how_long_is_paternity_leave_in_the_us.pdf
    • http://dekifovep.epizy.com/formato_de_alta_medica_del_imss.pdf
    • http://bexadujozopu.epizy.com/72810783832.pdf
    • http://nezopodadas.epizy.com/veteromalegekodojiwadegup.pdf
    • http://bejitepirisobi.epizy.com/briefing_sheet_template_excel.pdf
    • http://nujugeteteda.myartsonline.com/wozegim.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e59d.bin
8908cc26518fb0e1e676f121f092d8ab407801414f36e11e54e3f8487394bcf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE59D 6344 bytes
font_01_sfnt_off0000fb42.bin
0eb87f26f55754eb1ff618f92b3efb4799d02d8c8fca86048e9ee732a347ed01		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB42 15244 bytes

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