Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6a76fd9fd9c7bf…

MALICIOUS

PDF

75.3 KB Created: 2021-02-22 21:00:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 518a1087f86c44d2840391f9750c7d5a SHA-1: 91e16785a80255beb2fa0127a5ed23f48d4cfc46 SHA-256: 4d6a76fd9fd9c7bf22ac7a0efcc2f52951471a9a76430cfab7985c54f4f08a27
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a malicious domain, likely to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware delivery attempt.

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://druttle.ru/strik?utm_term=how+do+you+test+a+first+alert+carbon+monoxide+detector PDF link annotation
    • https://vuzitiruf.weebly.com/uploads/1/3/2/8/132814505/likeribujegokok-rogupunotujexil-palur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464524/normal_602b2caf9365d.pdfIn PDF document text
    • http://videohost.space/juxiladawo79dye.pdfIn PDF document text
    • https://fotofewoxa.weebly.com/uploads/1/3/4/8/134849098/nebole_penunape.pdfIn PDF document text
    • http://hellesypakk.online/536138098759t1xq.pdfIn PDF document text
    • https://zujamabosav.weebly.com/uploads/1/3/4/3/134363941/zojidirakiru_zopelifobijim.pdfIn PDF document text
    • https://josodurug.weebly.com/uploads/1/3/5/3/135394296/mawojilojosu_sivob.pdfIn PDF document text
    • http://alteramaks.world/attack_on_titan_colored_manga_downloadizhm6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487416/normal_60089c12eac93.pdfIn PDF document text
    • http://generatorsale.ru/free_templates_of_cvnmz27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499984/normal_5fd6a564979e2.pdfIn PDF document text
    • http://private-channel.site/ea_sports_ufc_3_ps4_amazon14qsz.pdfIn PDF document text
    • http://bupro.asia/ias_2_2018mks1z.pdfIn PDF document text
    • http://kinoogf.space/racer_off_road_vehicles_for_sale_craigslistb3k4o.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/gateme/65477557639.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/lewirowelujoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/adobe_indesign_cs6_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/acknowledgement_for_ojt_narrative_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/28619168905.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_off0000e7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E8 5532 bytes
SHA-256: efb27293fea0f85182f4bc6c9ac4c1a777b6918ad6b149cedc0d8a11e0c20280
font_01_sfnt_off0000fabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABB 10820 bytes
SHA-256: 65948a5c281a50e090ef1c0c0a144aa39bad04cac1b383d29137472e1a06c398

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