Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51d3f087e33d838…

MALICIOUS

PDF

84.2 KB Created: 2021-03-20 13:27:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bed296736759294a3586bdb8b0f6e01 SHA-1: d7fe74a27eb7aee786c608cc169db8cc0522ef01 SHA-256: e51d3f087e33d838b654e37e62d7273bfd2dc0f7d777fd5cedbe72dded713f85
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URIs, with the primary one being `https://soxebez.ru/wix?keyword=true+colors+workshop+activities`, which likely leads to a phishing or malware distribution site. The PDF structure itself is also flagged for duplicate object bodies, a common obfuscation technique in malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=true+colors+workshop+activities
    • http://skidki-day.shop/microbiology_made_ridiculously_simple_edition_60tpl6.pdf
    • https://cdn.sqhk.co/niwonosorude/tibA7ia/77341114832.pdf
    • http://italia-doc.fun/modern_spirituality_crosswordvna7w.pdf
    • https://cdn.sqhk.co/junukexad/b6Ycies/49542938243.pdf
    • http://kfnwejfnkwheklf.space/cathodic_disbondment_testynfry.pdf
    • https://cdn-cms.f-static.net/uploads/4463287/normal_601bb4b0435c2.pdf
    • http://sdek-24.cc/what_color_is_class_d_airspacex799q.pdf
    • https://cdn.sqhk.co/jebavimot/higdLhj/79176239154.pdf
    • https://static.s123-cdn-static.com/uploads/4385014/normal_5ff3531475691.pdf
    • https://cdn-cms.f-static.net/uploads/4500678/normal_603b9638d44d4.pdf
    • http://specrazreshenie.com/bugenakigafesuzugasinural4swwg.pdf
    • https://cdn.sqhk.co/kimokajuz/sjjdXmg/setika.pdf
    • http://yandex-dostav.ru/punekogexavuman1wq5a.pdf
    • http://shoop-fe.ru/pioneer_ddj-sb_serato_dj_controller_softwareyx9w6.pdf
    • https://cdn.sqhk.co/bupewazadufa/didhbd2/subway_princess_runner_mod_apk_download_uptodown.pdf
    • http://komarovskii.xyz/90239410927kju2x.pdf
    • https://static.s123-cdn-static.com/uploads/4375890/normal_5fcaed4e41118.pdf
    • http://petrol-v-pol-price.site/92422201253nm7xl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/luborinizu/bandsaw_blade_guides_for_sale.pdf
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_7cb029c82b524537b26d857270bbd876.pdf?index=true
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_d7babf0acea24d1ea354b63a099ef894.pdf?index=true
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_ccf29f2488494f07805795bef5671be1.pdf?index=true
    • https://s3.amazonaws.com/towutoginadivu/21729775614.pdf
    • https://s3.amazonaws.com/wizuluworafid/20978018367.pdf
    • https://s3.amazonaws.com/xulepiwa/40606654346.pdf
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_2a21baf017d34bc48f8dd70ff3985360.pdf?index=true
    • https://s3.amazonaws.com/sepawi/xiaomi_aggiornamento_android_10.pdf
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_b0147490da5644c69f2e901fd3f3f74a.pdf?index=true
    • 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_off0001092d.bin
6e9dd75ce361747acdd8316d1f99e1f1f333aee4afb1dcfbb188f35b0dea525e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1092D 5188 bytes
font_01_sfnt_off00011ae2.bin
ceb734e4f8de21857d34512000f60aa5877393f801ee259f41f38b5a481a2ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE2 11808 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.