Malicious PDF — malware analysis report

Static analysis result for SHA-256 725c762618208701…

MALICIOUS

PDF

74.6 KB Created: 2021-03-14 03:46:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 8dbb8071cac1658da93b4dd7b9fb7f3d SHA-1: 65040e0ad326552380e578f41759c9f97212b57a SHA-256: 725c762618208701f3b43d854e50dac6f3f87773d89a84490feb774e9f243491
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs that are likely used for phishing or to download further malicious content. The document body, though partially corrupted, suggests a lure related to a book title, indicating a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=libro+ficciones+de+jorge+luis+borges+pdf PDF link annotation
    • http://gallery-shop.site/lecturas_de_reflexion_para_secundariazu8ex.pdfIn PDF document text
    • https://fudafovagovareg.weebly.com/uploads/1/3/4/8/134868702/wumudaferabasaroguno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382613/normal_5ff20be6b4735.pdfIn PDF document text
    • http://pornbustyvids.com/shatter_glass_weedronq5.pdfIn PDF document text
    • https://tiwedipetubed.weebly.com/uploads/1/3/2/8/132816066/3669993.pdfIn PDF document text
    • http://gufutaca1.xyz/newodonavem1jib3.pdfIn PDF document text
    • https://tonavibete.weebly.com/uploads/1/3/4/7/134748981/44bdd90c586c085.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486193/normal_5fd15317bc30b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481417/normal_5fe50ad2dc2bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_6027cc14dadbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529780/normal_5fd04df5188ac.pdfIn PDF document text
    • http://idealica-official-it.website/zuwunonaliwexhato.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452621/normal_60070ffb88135.pdfIn PDF document text
    • https://jeletaru.weebly.com/uploads/1/3/5/3/135321400/7801bf30c64c7f.pdfIn PDF document text
    • https://kuzefezatuxiwa.weebly.com/uploads/1/3/4/8/134898449/biwud-zevedevowuworaz-wejem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380682/normal_5fe08ae46f9f0.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/dikobepibelun/variety_show_adalah.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/sternal_precautions_occupational_therapy.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/apply_for_internship_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/38414901032.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_off0000e1e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E3 5272 bytes
SHA-256: 8739b36b62383178314a0f15f05b65b464b4cea419ec54f5337ca61362c84f5c
font_01_sfnt_off0000f3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E9 12820 bytes
SHA-256: 6283c252e8f134f9034f0e43fdd35033eee28887ea9ca7c4bbe992cef05e92cc

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