Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b1d44e131f085d2…

MALICIOUS

PDF

86.7 KB Created: 2021-04-17 23:37:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4928f47fc53e0fbdd0dd160eaef3a4f3 SHA-1: e7b2ebcdd05db47c2404175f1e2193d9b36f0e78 SHA-256: 8b1d44e131f085d2059290b453a2ec68ba7f1ec8f101cbe7a1e3f30b0f4e2346
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=bravos+mct+dryer+won%2527t+start PDF link annotation
    • https://cdn.sqhk.co/gunumiku/aGAk7x2/pipimovodolofizotoxewux.pdfIn PDF document text
    • http://zupurowuzuxule.iblogger.org/wexogasujugadawa.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/qojj5Uj/39725725115.pdfIn PDF document text
    • https://cdn.sqhk.co/kasesiseb/dxKhfjc/top_tower_defense_games_iphone.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/dewazewokib/will_the_stand_2020_be_released_on_dvd.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/how_do_i_get_into_my_acer_laptop_if_i_forgot_my_password.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/lokojetutetimerozonimaru.pdfIn PDF document text
    • http://surodumetajaz.epizy.com/98895407946.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/95294907533.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/gcse_maths_tree_diagrams_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/best_wallpapers_for_pc_full_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/wetin.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/98940076891.pdfIn PDF document text
    • http://ruxuvejefo.epizy.com/wodinel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1babd293-9853-4549-877c-ae79c5c661f6/owners_manual_hp_officejet_pro_8600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9bf0c31-51e8-4952-96a5-98a6d4743548/jatabotusiraposagewonir.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/highlight_arsenal_vs_burnley_3-_1.pdfIn PDF document text
    • http://galinuv.rf.gd/partnership_business_agreement_in_bangla.pdfIn PDF document text
    • http://wodebupikeziv.epizy.com/mupejovebu.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/gerenopa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000112e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E7 5392 bytes
SHA-256: 7fc4eae8788bbaabafea193c0c16dfe10a288bc40d5c82d649641622e210ea21
font_01_sfnt_off00012545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12545 11948 bytes
SHA-256: a70e680c8451b6835d7af9e2d90727c9a7515496e8b18c35754ef80531189eb0

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