Malicious PDF — malware analysis report

Static analysis result for SHA-256 8007bd53cb03c0be…

MALICIOUS

PDF

74.5 KB Created: 2021-03-02 08:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6effa4c8d41ba7c82f5b521948d302b2 SHA-1: e552b7bb735206c9fdc7680652c0499b7c5e05b5 SHA-256: 8007bd53cb03c0be7143d0c0dc604c5e5f7ce8beaecf5d4959336aacbd84ba93
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, suggests a lure related to 'few things left unsaid pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/wix?keyword=few+things+left+unsaid+pdf
    • http://eslivdrug.space/dopegudorezirovopowumefuyd3tf.pdf
    • http://atlas-copco.su/will_i_lose_weight_on_alkaline_dietfcxxo.pdf
    • http://rasudilikid.mywebcommunity.org/vinegukumasevubekutija.pdf
    • http://palikexifumalam.mywebcommunity.org/82427326076.pdf
    • https://cdn.sqhk.co/sesumaku/cihEgd3/history_watch_full_episodes_of_tv_shows_online.pdf
    • http://biomaniks.website/55655148767zju1t.pdf
    • http://jovepodixowofow.mygamesonline.org/20768711100.pdf
    • http://astropsychology.website/where_can_i_drop_off_unwanted_clothes_near_meyvtaq.pdf
    • http://ca-manalapan.space/zifedogefenagumewanaxumu4lm8x.pdf
    • http://msertis.xyz/what_is_a_panel_ready_fridgeae4s8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vuxalirudidel/63589376654.pdf
    • https://s3.amazonaws.com/vawoginele/55749669917.pdf
    • https://s3.amazonaws.com/moduxanakuri/hotel_voramar_formentera_baleares.pdf
    • https://s3.amazonaws.com/rimepusox/desogufiti.pdf
    • https://s3.amazonaws.com/juduk/defunanakituxavazosufamow.pdf
    • https://s3.amazonaws.com/zerepuzuze/vederevupinuzasiloje.pdf
    • http://pekafujojef.onlinewebshop.net/every_mans_battle_workshop.pdf
    • https://s3.amazonaws.com/libeganot/70426045936.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_off0000e798.bin
a08aedefa5fa171c3f4ca8673ac87b43e84c9e519f1ba8636207129a339db596		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 5252 bytes
font_01_sfnt_off0000f99c.bin
c8e69b3fcfa0bc2f8017e9efba24f986ee2e5ebed3731e1169c40eaca8c806d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF99C 10240 bytes

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