Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba472ab50d52e79…

MALICIOUS

PDF

72.6 KB Created: 2021-01-03 03:23:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 75d5ca805590cd8eac3b7a8502a740c9 SHA-1: 9448ead3b39273ebda313df21146721088d71507 SHA-256: 9ba472ab50d52e79e4812262622b5c81d3871cf0b300a79645b070562caa5678
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=ir+ms+uv+nmr+spectroscopy+problem+set+answers PDF link annotation
    • https://cdn.sqhk.co/dimumaneda/icjb2ii/baduwitopogorerekakunuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401538/normal_5fb6260435c04.pdfIn PDF document text
    • https://cdn.sqhk.co/denobafopum/b4cMieR/scuba_diving_simulator_shipwreck_underwater_world_record.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454559/normal_5fc54000a1cd4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b99aec6-15da-4745-9483-711553e07661/diseo_de_maquinaria_norton_4_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7f2ee19-205b-48c3-954c-9fecde3f796d/csumoodle_remote_learner_net.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/hollingsworth_michael_a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/826459a7-a4b1-406e-9c7d-f743a6fa6b2b/tapisisinitasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c358690a-a6e4-42ad-b978-c1239907abc3/kerafogene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50bae1c4-2ace-4c95-978e-92c4a52b88d0/philips_32pfl3504d_f7_firmware_update.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/49929477347.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/digital_marketing_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/sosotuxadelezoxupodovuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/android_auto_remove_music_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/gasot.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/fevekujejitejoti.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_off0000e02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02F 5408 bytes
SHA-256: bef7bc6a15943d57bce731b134ec8f154a46ffafabe3f25626c9b60aeebbc2bc
font_01_sfnt_off0000f296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF296 10148 bytes
SHA-256: baa4cabffd07620fabcf2c4d6e23b32d653ff9dbd884b405d7ee187e36a4e59f