Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c628f72f5a162a2…

MALICIOUS

PDF

76.6 KB Created: 2021-04-09 03:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a868a49480c0e451f76499bc4beaadc7 SHA-1: daffc8e40fdb5d7b418d8bbc02a99e2d90f1e328 SHA-256: 8c628f72f5a162a29a470df1614a9fdd95de2eb4734c0f40be6fe976b04441c4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/strik?utm_term=what+kind+of+transmission+fluid+does+a+1993+ford+ranger+take
    • https://cdn-cms.f-static.net/uploads/4368758/normal_600ac92f7c3df.pdf
    • https://static.s123-cdn-static.com/uploads/4405185/normal_5fe5ea763010a.pdf
    • https://cdn.sqhk.co/nuduniguwufo/jfjahfN/zelodikafimija.pdf
    • https://cdn-cms.f-static.net/uploads/4467561/normal_6057dd5504e25.pdf
    • https://cdn-cms.f-static.net/uploads/4489257/normal_5fe69525e3b96.pdf
    • https://cdn.sqhk.co/fetumamuv/idmAhaT/begin_again_3_korean_variety_show.pdf
    • https://cdn.sqhk.co/wekaradukuve/ohcgegh/battles_of_world_war_2_timeline_worksheet_answers.pdf
    • https://cdn.sqhk.co/mikedeto/IwwidD8/logo_maker_logo_creator_generator_designer.pdf
    • http://kunepuvobimamin.medianewsonline.com/cant_connect_my_panasonic_tv_internet.pdf
    • http://dadevizevarek.scienceontheweb.net/97481343578.pdf
    • https://cdn-cms.f-static.net/uploads/4420939/normal_600c46d25032c.pdf
    • http://zukoretevir.medianewsonline.com/50009621130.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kosipefojaw/android_edittext_material_design_library.pdf
    • http://bagugexasorip.myartsonline.com/49872805095.pdf
    • https://s3.amazonaws.com/semuxemakaw/armitage_shanks_contour_21_mixer_tap_manual.pdf
    • https://s3.amazonaws.com/bikikanafopavu/guide_taille_maillot_de_bain_homme_adidas.pdf
    • https://s3.amazonaws.com/putelekireza/57047812057.pdf
    • https://s3.amazonaws.com/bisiku/una_churrera_manual.pdf
    • https://s3.amazonaws.com/sedowedi/98892821753.pdf
    • https://s3.amazonaws.com/tumuzu/91235662224.pdf
    • http://vupaguriwedizid.atwebpages.com/pafuzewiruredap.pdf
    • http://zitasixan.atwebpages.com/principles_of_molecular_virology_5th_edition.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_off0000ee36.bin
2b25ff5dabb941ad4a7f0f736728c202004d76bc820a25b6e12f91a28db68756
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE36 5768 bytes
font_01_sfnt_off000101c6.bin
0fffd0541dda1f8c237b646bb0d30ef0e4c68c9bfdbb345c3c855370fa9d8112
pdf-font-stream PDF embedded font (sfnt) at offset 0x101C6 10236 bytes