Malicious PDF — malware analysis report

Static analysis result for SHA-256 add2354322d615e0…

MALICIOUS

PDF

76.6 KB Created: 2021-05-09 03:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 68d5833cdf6d1f7639fb8fd8b7c9a822 SHA-1: 930f3383a499ea860458f1dd2a54cd5e298a0345 SHA-256: add2354322d615e01253686dee2d85266e32146f732e747b9568bb151ca268c6
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 numerous embedded URLs that likely lead to further malicious content or downloads. The document body, though heavily obfuscated, suggests a lure related to 'books', aligning with a phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://zajinet.ru/strik?utm_term=best+for+dummies+books+reddit PDF link annotation
    • http://gejejasofubi.mywebcommunity.org/automating_the_boring_stuff_with_python_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368955/normal_6007a43adbeb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451755/normal_6019985a7f263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5fea44f55e8b5.pdfIn PDF document text
    • http://helpforteam.com/14919525852gc65s.pdfIn PDF document text
    • http://guzoseta.getenjoyment.net/83325963597.pdfIn PDF document text
    • http://rujewazaxijaza.sportsontheweb.net/enlaces_quimicos_definicion.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481053/normal_60034d89652aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464056/normal_5ff39077d4e2b.pdfIn PDF document text
    • http://momentshop.space/ejercicios_de_derivadas_trigonometricas_inversas_resueltose0vql.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366660/normal_5fe4e735a0064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_602da54550dbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5fd21bf8a0cc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388814/normal_5fdf70b9ae983.pdfIn PDF document text
    • http://guparob.mywebcommunity.org/busixopiwusa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425933/normal_603d3c8ff2a8f.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/1a872ded-35fa-4eb2-8ad7-5b14c860fcbf/60464611040.pdfIn PDF document text
    • https://51bf459c-6b46-41b0-863f-532cf8a77e0d.filesusr.com/ugd/2eedf1_a537bb1e2e5348a5b16b0b2de55244d5.pdf?index=trueIn PDF document text
    • https://eeff404e-5492-4914-a1d7-e39d1f35e6b2.filesusr.com/ugd/e58d70_0d57e43346e54b0cb80ac45745b50b13.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e70fe2c9-8b17-49a1-9b67-b6395eb6a3e6/notakivukotokixiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91f8805f-5e2d-4125-9747-6c11cf312d9d/lg_wm2016cw_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65e7b099-2181-4f28-9f49-f4fb6eaa0395/sevubibotijaxokulidezixen.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_off0000ecec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEC 5064 bytes
SHA-256: ce872a0877dd31cfe2c5b8fadb6818db9271303af90665200bb6b3e53c96614b
font_01_sfnt_off0000fe15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE15 10900 bytes
SHA-256: 366710f13b851cc7c37d5ed59bb1cccc94d4e65def4488a13e0f859e1e32c70d

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