Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9be6aa1be875dd9…

MALICIOUS

PDF

72.9 KB Created: 2021-04-04 20:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 813413a63016cd933f5cd8ccc5f4a270 SHA-1: 9f1c9fba1795b3ac2e7d281d055b253baee7239c SHA-256: f9be6aa1be875dd969df925fb40fac8904b165fe8b3629ff2de58c00fac4236d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'maypoin.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a song title, potentially to trick users into clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=two+step+cowboy+boogie+song
    • http://rowowevu.mypressonline.com/99_names_of_allah_in_arabic_with_urdu_meanings.pdf
    • http://gexomafe.mypressonline.com/anlise_combinatria_e_probabilidade_com_as_solues_dos_exerccios.pdf
    • http://kovuzaxaf.medianewsonline.com/12770340533.pdf
    • http://beautysale.site/57493631218djn04.pdf
    • http://joxezorov.mywebcommunity.org/37097959602.pdf
    • https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/bfb210b.pdf
    • http://tofotibuwul.sportsontheweb.net/how_to_fix_printer_error.pdf
    • http://intereriia.com/english_grammar_articles_check_onlinejiuaz.pdf
    • https://sikenobavusemel.weebly.com/uploads/1/3/2/6/132682861/mutubizafix-baketuzoxuva-vazozejodoba.pdf
    • http://topsalon.xyz/audio_technica_at_lp60_usb_needleuzwfu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kupikobu.epizy.com/gilozovozevozededepu.pdf
    • http://mujijebal.epizy.com/malwarebytes_anti-_malware_android_full.pdf
    • http://jotowevaputevif.epizy.com/zufezuridi.pdf
    • http://lupixopuvir.onlinewebshop.net/cancer_de_la_cabeza_del_pancreas.pdf
    • http://zutawatupasexap.rf.gd/ximetafatesote.pdf
    • http://darafefe.rf.gd/banque_cantonale_vaudoise_annual_report_2016.pdf
    • http://mevabifutaxepag.epizy.com/popani.pdf
    • http://degeluvugo.rf.gd/business_english_marketing_vocabulary.pdf
    • http://romepasuv.myartsonline.com/45237461598.pdf
    • http://wofajigu.rf.gd/kukokegogumokop.pdf
    • http://jemileti.atwebpages.com/refractive_error.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_off0000dfaf.bin
27032cbfc2fd099e46f8be40b1c21fe175b5b155edfcf1be12e34f3eee453dcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAF 5044 bytes
font_01_sfnt_off0000f10d.bin
7ba54515637dfc0aeb6072b6c8a5aba66014c6922b19774ea102f642c9a6aa34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF10D 10952 bytes

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