Malicious PDF — malware analysis report

Static analysis result for SHA-256 4377c765e60dfcd1…

MALICIOUS

PDF

76.5 KB Created: 2021-03-24 17:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 27a795aa936ee0eaf8807d0f45ca8957 SHA-1: 5db879e3212f323918efe8b5ae34fdc4728e7318 SHA-256: 4377c765e60dfcd13bbf22eee25e42a2a0ab09097617c53f3208aed774623df5
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-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://dafemum.ru/strik?utm_term=free+download+mp3+ost+the+heirs+full+album PDF link annotation
    • http://13millions.store/xurefexofegeba6anjc.pdfIn PDF document text
    • http://naturaleone.space/what_age_rating_is_princess_diariesg3uso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448337/normal_602170fa25562.pdfIn PDF document text
    • http://livopazumifena.iblogger.org/37377899267.pdfIn PDF document text
    • http://bimemonok.22web.org/30936042988.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/child_development_worksheetsb0xdk.pdfIn PDF document text
    • http://orbitan.fun/wosovuze57jhy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459059/normal_60255ac9e853d.pdfIn PDF document text
    • http://50offshop.pro/interior_design_jobs_in_mumbai_latest5cdjb.pdfIn PDF document text
    • http://mepanawabopod.22web.org/gakizimemubukeku.pdfIn PDF document text
    • http://tawojerikopopud.iblogger.org/vernier_caliper_accuracy.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/fewifuwu/free_funeral_program_template_2010.pdfIn PDF document text
    • https://891dfe3a-8969-4df2-b253-5ccc4ebbb7a0.filesusr.com/ugd/e66789_fdfa548c51464b68b082260259a6a152.pdf?index=trueIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_bef58ae0fa4d419983bc51a59e23fa53.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezorito/dimojexepufavebatipewed.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/wuzirujamakaziwi.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/lurosejaferulona.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD421 7484 bytes
SHA-256: 6837a21d210f646578ef8390a4932465682bbffc3f3ee32786f8293c94b71c09
font_01_sfnt_off0000ecfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFC 5632 bytes
SHA-256: 42ab18bd16af16ea153b3b6ea1f41b531c258adff741c8a6672031a647d2034c
font_02_sfnt_off00010008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10008 10964 bytes
SHA-256: 013b7c9d5b1a8544ba35b2dce730b84ba1df732cbcde8cb9986bf01b34ed80b2

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