Malicious PDF — malware analysis report

Static analysis result for SHA-256 e656afcbaac5e4c7…

MALICIOUS

PDF

102.2 KB Created: 2021-06-07 02:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 879f248195de5a6ada2a7c8bc88c57ed SHA-1: 50464724bde1f96b6256c292f6b03973db747520 SHA-256: e656afcbaac5e4c7cb27d50b93cd7463e8bcae891e917d23d88c23a29bd9efe0
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to reference a popular video game, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://philabc.ru/pbw?utm_term=mortal+kombat+3+izle+t%25C3%25BCrk%25C3%25A7e+dublaj+hd+tek+par%25C3%25A7a PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472501/normal_5fe6aef0bbf66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383924/normal_5fc92ad511273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_606c07ab10278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426828/normal_605975628085c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450635/normal_6024ae54a77cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_6053d983c15d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446034/normal_6065aa21056f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461744/normal_6027d545cd2a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401723/normal_60146c3721666.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471109/normal_5fcf05359576f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493905/normal_6035cd37ce4e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487191/normal_5fe16dc5e5342.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4498842/normal_60b7375207684.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_6028f9c15b102.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/7ffcb2c3-baf2-4691-bce2-f0d695bfe72f/pibeluxefazezux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f41a16b-1933-4e53-b885-d2e60cfbefbe/que_significa_cuando_se_rompe_el_anillo_de_compromiso.pdfIn PDF document text
    • http://wirabofitox.pbworks.com/f/how_to_use_avent_naturally_express_bottle_warmer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c1c0bf1-da62-4ecf-9ab1-f9b964e56200/what_to_bring_to_get_real_id_mn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2fdd4a1-ec1a-41f7-a2cc-86c95594e6d2/mysql_beginner_tutorial.pdfIn PDF document text
    • http://xesimisejek.pbworks.com/w/file/fetch/144749040/62656492338.pdfIn PDF document text
    • http://rubepikonot.pbworks.com/w/file/fetch/144657897/zimekilajise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5afd53d4-b52f-40ee-87f0-d17a2fb4bea8/should_you_train_chest_after_shoulders.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62764eac-255a-4c23-9488-653248af3290/mbe_con_law_outline.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_off00014946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14946 5824 bytes
SHA-256: f362794232ce0c292495763dfe8d3d891e2f5f122b212264986325bc83152739
font_01_sfnt_off00015cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CC6 13976 bytes
SHA-256: 256d33c70d8629282e68a13f6a5222a8d4f115181c30f9faf73b6e4194de45d2

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