Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d94b934fbf5827…

MALICIOUS

PDF

71.0 KB Created: 2021-03-20 18:02:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fe4a3d34f0df76d1361ad2801b9f8a8d SHA-1: 57bda55b1cce98ca97056384ebab9c771aadb621 SHA-256: c2d94b934fbf582701d17494aec7bcde414fc1e449d8118da08d96832f349a2d
104 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. It uses an urgency-based lure. 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 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/strik?utm_term=kaplan+cfa+promo+code+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456378/normal_60325a02d9785.pdfIn PDF document text
    • http://woziwowariv.sportsontheweb.net/can_you_charge_a_chromebook_with_a_usb_cable.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501775/normal_600c165b8dd48.pdfIn PDF document text
    • http://vixemifojetinag.sportsontheweb.net/curriculum_vitae_formato_europeo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365621/normal_5fc89ac5791a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413585/normal_603ea4e117dd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483072/normal_6011fd47bf9dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466376/normal_6003eeb1a7c9c.pdfIn PDF document text
    • http://domobifotuza.sportsontheweb.net/xukexakemomaxunuk.pdfIn PDF document text
    • http://madoxorijegobe.sportsontheweb.net/find_great_deals_for_games_descargar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495686/normal_5fecb5e7e03f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445130/normal_604f7c3f8f199.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/b25ffff9-a4e4-4517-80f7-3d79544be6fa/how_to_predict_c13_nmr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3cdf39a-4f9e-41f2-aa0b-9424dfb7479c/busifowifuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/138dd8ab-67ec-4faf-9a92-163b03e8810c/tariw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6860530-a622-468e-99d2-6935ed3f99ff/are_g_shock_watches_worth_it.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12066f9b-dec6-4c57-9b3c-0a5420384f72/present_simple_continuous_exercises_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/713e8a4c-932a-4fdf-8c16-2f3b69d2c3d9/19319248227.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_off0000d66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66E 5368 bytes
SHA-256: 7453f119c35007e439d221c244ce2d6ab39df42aa85c40ba5e415c6121b4fc07
font_01_sfnt_off0000e8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A3 10828 bytes
SHA-256: be812c4b536213401157bf2e13437eaa5153b4ec82da58fe2891cc3b4ea5cbd8

Open this report in the interactive analyzer, or submit your own file for analysis.