Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43c54dbf9f83439…

MALICIOUS

PDF

161.6 KB Created: 2021-03-27 13:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a35ad64096c30955ec8d2c94cf2ce313 SHA-1: 0e124479af32c361888d9546c313505669a76360 SHA-256: f43c54dbf9f83439eda45af08c446654b2b3198b5d83c9e2023b09b151665f31
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains multiple suspicious links, including one disguised as a Suzuki Grand Vitara owner's manual, which redirects to a malicious PDF hosted on 'securityofusersdevicesonline.site'. The presence of embedded URLs and the nature of the detected heuristics strongly suggest a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9815

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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=suzuki+grand+vitara+owners+manual+2010
    • http://cmb-accueil.com/who_invented_chrome_browserudkpx.pdf
    • http://razvivatel.blog/869778859644a14i.pdf
    • https://cdn.sqhk.co/rifibimilo/jejejeg/ice_dragon_wallpaper_hd_android.pdf
    • http://hightrade.club/the_bunny_hole_lismoreudagq.pdf
    • https://cdn.sqhk.co/kidobogi/dhixwha/arraylist_interview_questions_and_answers_in_java.pdf
    • https://cdn.sqhk.co/rozamulev/fNWllig/doxujigawobirifisozinukiw.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • http://blaugrana.ru/560266319538uimp.pdf
    • https://cdn.sqhk.co/sanobude/ibjf2qc/download_yu_gi_oh_duel_links_full_version.pdf
    • https://cdn.sqhk.co/fujotojaxob/ihjfLkL/80152145974.pdf
    • http://domavera.ru/answering_interview_questions_on_confidentialityylxhv.pdf
    • https://cdn.sqhk.co/dutudovajud/gcEB4hc/pancake_tower_camera.pdf
    • http://securityofusersdevicesonline.site/test_de_dominancia_cerebral035t0.pdf
    • http://ukranews.site/bupupikonisozowhsasr.pdf
    • http://trychambre.xyz/25646157555wnegu.pdf
    • https://cdn.sqhk.co/gonolesuzam/chgCThh/butubogupovexopofup.pdf
    • http://hydraruzxpnew4af.exchange/96611998212fmt8t.pdf
    • http://farvestnn.ru/how_to_make_my_child_succeed_in_schoolzhjeq.pdf
    • http://ulekschool.online/what_is_chaos_theory_in_sociologyl0mo5.pdf
    • http://official-win.xyz/best_english_speaking_app_for_android_offlinechxcp.pdf
    • https://cdn.sqhk.co/gukomoluda/iyidheW/pirizetojezip.pdf
    • http://yoga-fitness.space/1st_grade_math_worksheets_online_freeov4hv.pdf
    • http://tuimag.ru/rigewuneluvufesomipubegari1n3b.pdf
    • https://cdn.sqhk.co/kavejufa/hgjd7ic/49164523604.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/78789ab1-7ddc-433e-b75f-04e1b399c5cb/m_audio_axiom_air_25_driver_mac.pdf
    • https://uploads.strikinglycdn.com/files/967be326-468b-489b-a019-0fa26dab8b06/54483589996.pdf
    • https://uploads.strikinglycdn.com/files/a88dd0d1-1bdd-4c2e-9d42-b914f90b2bc2/sofuwara.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000223af.bin
74d31e0b6fcabb07a49e8fe627ef1840712ae1d247cee426a2090342cecbea37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x223AF 5840 bytes
font_01_sfnt_off0002379f.bin
5a98a35ce8ac2e74c6d252dcc023b210303ee7022d1bc0031ce3d70b4ea10b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2379F 12112 bytes
font_02_sfnt_off00026081.bin
e5245523bd71a78e06ca3300da63f55ad096e28dd8c1a5e83e138be64f7d0aee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26081 16084 bytes

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