Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c86e57b2bf6efc5…

MALICIOUS

PDF

85.6 KB Created: 2021-01-30 06:28:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bb85c42db56b2a18f5ed85383f260f74 SHA-1: 250568b2cc34e7ae76d262da78848fdff736aaf7 SHA-256: 3c86e57b2bf6efc52710a761b45dd33c8b233000f9fb0cad0892a6e39a8ea393
124 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, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru' which is likely a lure for downloading malware, disguised as a video player application. The presence of a visual download button and QR code lure further supports a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://trafftec.ru/wb?keyword=video%20player%20browser%20apk PDF link annotation
    • http://kigurumi.org/how_to_change_my_voicemail_password_on_androidqc7w3.pdfIn PDF document text
    • http://art-practice.org/toxovezizibsggzg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365606/normal_5fcce480d8df1.pdfIn PDF document text
    • http://copyright-central-media.com/clash_royale_hack_free_ios7nmag.pdfIn PDF document text
    • https://rotalexabif.weebly.com/uploads/1/3/1/3/131381819/09b8c9.pdfIn PDF document text
    • http://potenciy.xyz/166097147936d58d.pdfIn PDF document text
    • http://oneitstore.info/jorizitotojitojefuxakbg8hm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476756/normal_5fd95770de3e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_600a53036cba5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/tifigerisewade.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/18511849737.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/75146593863.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/background_video_recorder_pro_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/boi_account_opening_form.pdfIn PDF document text
    • http://nemebikox.epizy.com/bein_sports_tv_guide_rugby.pdfIn PDF document text
    • http://kiwozoma.epizy.com/cookiezi_skin_osu.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/79588889965.pdfIn PDF document text
    • http://javirukegeg.rf.gd/live_wallpaper_android_amoled_display.pdfIn PDF document text
    • http://zomimuju.rf.gd/formulierungen_absage_angebot.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/pirexopaxoderoxaf.pdfIn PDF document text
    • http://jupanadipi.rf.gd/chaos_theory_edward_lorenz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE70 5316 bytes
SHA-256: ddef6af12cb9d8d6657947da4741d32929ff1667d9b598a0c162dbc84336cfef
font_01_sfnt_off000100a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A0 2152 bytes
SHA-256: 62a821ae6eaf2b5b9e53a5314c140bd07e3cdd174cefd9c083e113924af10b04
font_02_sfnt_off00010a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A54 11632 bytes
SHA-256: c2628477a2b6723ebfe25285fbb7d55a1d49c152408a0b62ab424b4448b2539b
font_03_sfnt_off0001322d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1322D 16492 bytes
SHA-256: 86f0cdb313824039da90733caace7ac13388a7bc5b61c62ee1289ca2c886f6f9

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