Malicious PDF — malware analysis report

Static analysis result for SHA-256 155e02be087aaa41…

MALICIOUS

PDF

80.6 KB Created: 2021-04-04 20:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b13ef0e33a50d8eed3b0f6818ff960be SHA-1: 9242b8a6385a90bfa45fc1a6ba81349154b40131 SHA-256: 155e02be087aaa41558aeb8e2dca98f990133f5e37044811305531a6f5d2560a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into clicking it. ClamAV detection and ML classification strongly indicate malicious intent, consistent with phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the document's deceptive content point towards a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://xajibur.ru/strik?utm_term=where+is+air+force+academy+located PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494149/normal_5fcaffb9e9b38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455658/normal_6003919cb0af5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494138/normal_5fe01c38bafd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529697/normal_5ff2bb583b4ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459780/normal_602169ad6c7c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423453/normal_60219dd654e4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5fddd6e71da2c.pdfIn PDF document text
    • http://tadekurujere.22web.org/surface_area_and_volume_of_cylinders_worksheet.pdfIn PDF document text
    • http://vivofuma.66ghz.com/draw_me_nearer_sheet_music.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481999/normal_6049c047a4397.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485005/normal_5fc6c7f9d1907.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480598/normal_603d910fe9908.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jaxegug.rf.gd/ingles_basico_ghio.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/zivebi.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/33286732606.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/journal_citation_reports_jcr_2019.pdfIn PDF document text
    • https://5457524e-bace-410a-9ce7-c8d8bc0eedea.filesusr.com/ugd/f0ffd0_861c83be300e447cb597b473d2a97fe2.pdf?index=trueIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_cb452befe6a04b05a79a94d0b58d8a1b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fadedosi/31260130255.pdfIn PDF document text
    • http://pujixedigegogup.epizy.com/agents_of_socialization_family.pdfIn PDF document text
    • https://a3e8d6b6-68ee-4625-a313-a25a09dbd39d.filesusr.com/ugd/312e12_7e3b35e2259f49caae9533a01d8185c4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/ballistics_report_destiny_2.pdfIn PDF document text
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_f4e1553805614c2e880ca7a950e23552.pdf?index=trueIn PDF document text
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_aa4c7b68af0e4757bc6019d3fdd25547.pdf?index=trueIn PDF document text
    • http://mukadepokexow.epizy.com/how_do_i_find_my_three_star_signs.pdfIn PDF document text
    • https://c69a8150-bb1e-4c46-878b-fc1622391bd7.filesusr.com/ugd/cf91d6_a653a3b8ea2049ff9c81b9f0e4a75bd4.pdf?index=trueIn 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_off0000fdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEA 5376 bytes
SHA-256: fd5906e662ce20626db27021639143d62714afda75905c5dff057aedabfd00b0
font_01_sfnt_off0001101c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1101C 10740 bytes
SHA-256: 4128f76c618380c0df2ef0553528a2c37c6dc399df28886c7a27699723c5e086

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