Malicious PDF — malware analysis report

Static analysis result for SHA-256 22819bbdb00206e7…

MALICIOUS

PDF

72.5 KB Created: 2021-03-14 00:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 05bb107137252e8513492983cd795ea1 SHA-1: 02a8f408bde6d7ad8e9d2a6c993a986d33e2a410 SHA-256: 22819bbdb00206e7845eada1ecb4b5028f45c66534eaf31d0f847e0fed150caf
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one pointing to a suspicious URL related to 'cyberpunk 2077'. The ClamAV detection and ML classifier strongly indicate maliciousness, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=cyberpunk%202077%20release%20countdown%20steam PDF link annotation
    • http://ing-jobs-opportunities.com/pafusukazulimevimu7dg76.pdfIn PDF document text
    • https://bobazuforabi.weebly.com/uploads/1/3/1/4/131452976/9a7552.pdfIn PDF document text
    • http://lavka-karamel.ru/feasibility_study_template_pptcy34r.pdfIn PDF document text
    • http://mebel-albero.ru/43593376134wdx42.pdfIn PDF document text
    • http://teksalon.xyz/describe_the_sun_physical_and_chemical_characteristicsy7xki.pdfIn PDF document text
    • http://xukosususif.medianewsonline.com/automate_programmable_industriel_s7200_de_siemens_cours.pdfIn PDF document text
    • http://jutidewolojura.mypressonline.com/81160835557.pdfIn PDF document text
    • http://arthromedshop.xyz/investigation_report_formqowkx.pdfIn PDF document text
    • https://japafapu.weebly.com/uploads/1/3/1/4/131437770/kexusikawi.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/laradusa/above_all_power_audio.pdfIn PDF document text
    • http://benamow.myartsonline.com/how_to_fix_xbox_one_controller_charging_port.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/fefawusuzujukuzusajigexu.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/scratch_free_for_ubuntu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afbd7d80-a747-49cb-b5dc-8583eb1ec85e/51331710973.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/41709016888.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/khund_bai_brar_full_song.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/berserk_2017_blu_ray.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/terunuxufas.pdfIn PDF document text
    • http://xasejumav.onlinewebshop.net/osaka_airport_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d91f43e0-4ca0-48ae-8f78-1f8ce0bc16f7/what_are_the_theories_of_organisational_behaviour.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/174f4369-cd6f-4764-80cc-dc7920416214/potoso.pdfIn PDF document text
    • http://fidalanono.myartsonline.com/tudimas.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/momipaginodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/164bf715-73af-420c-bae8-c644212dff27/relapse_prevention_plan_worksheet.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_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 5876 bytes
SHA-256: eda7891795500c093bfa43ea8a7ad323c5de86c2511c5d75e6b96bd9b68acb4e
font_01_sfnt_off0000efd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD3 10700 bytes
SHA-256: 582774552514bcac1d22d02c1a59399e4db083eebbbc6ee3d41adf1eaa2b0ecb

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