Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6fb25926b6bae1e…

MALICIOUS

PDF

85.0 KB Created: 2021-03-09 23:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 385d1678e1908356eeb4e8de66c80bdb SHA-1: 1e35c71593887d065aa0583a1da8ba93ffde0394 SHA-256: c6fb25926b6bae1e1c695f3d9eeb2b4dd7265dc829aafead614688f2d59b1613
112 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains heuristics indicating urgency and a visual download button lure, directing users to the URL https://pelibifir.ru/wix?keyword=universal+remote+apk+for+tv. The document body, though heavily obfuscated, suggests a theme related to downloading an 'universal remote apk for tv', aligning with a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://pelibifir.ru/wix?keyword=universal+remote+apk+for+tv PDF link annotation
    • https://cdn.sqhk.co/vudupapuj/3aCJQgd/xizelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_6035974ad00b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403959/normal_6034fceac8b3c.pdfIn PDF document text
    • https://cdn.sqhk.co/daguvemet/iciJA2U/vexofavoruf.pdfIn PDF document text
    • https://cdn.sqhk.co/raxulaxesob/L0jfPgf/58195468932.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489850/normal_5ff08933f1401.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/YhbijcM/download_indy_500_arcade_racing_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/woxewiwupir/weather_report_of_jessore_bangladesh.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/87423215482.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/free_cork_board_powerpoint_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/xoletozewotokatili.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/43237019484.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/56887400256.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/counter_terrorism_shooter_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afe846d5-c875-4511-81b6-847cf77e28e7/11672705390.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/99183507722.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/antivirus_avg_gratis_para_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/zobufewoxasiri.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/augmented_reality_ppt_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/680aada0-882c-4687-86a6-7336a085e67c/39267709334.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fde2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE2 4948 bytes
SHA-256: 57b1e26b200b9b3fac1790c13ef6c4c0a21bba630a8b5619257eff84b51d2f5d
font_01_sfnt_off00010e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E9F 13192 bytes
SHA-256: e9e992620ce37ff5dbce9bd1b0e60b6aa6cf5f3ab03769b6cf7db0cf716d8ef1
font_02_sfnt_off00013903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13903 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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