Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2faa07c5136255…

MALICIOUS

PDF

75.8 KB Created: 2021-02-15 22:02:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e48a3d87d8e859be8cb29e45716b9f6d SHA-1: 5995848ea57b02498e79c71ed4db52f908745428 SHA-256: cb2faa07c513625550a637bbd6df7a936249e538b0d739acac8aac67acc8e6e8
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection profile suggest a phishing or malware distribution 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/wix?keyword=keter+folding+work+table+costco
    • http://train-home.ru/vukasiwimn3ejt.pdf
    • https://zevebijupaxize.weebly.com/uploads/1/3/4/7/134754497/e42c13653be7.pdf
    • https://panusefebile.weebly.com/uploads/1/3/5/3/135331690/perisa_zabolikimoxer_zironomurijarem_xidadutikizuf.pdf
    • https://fibobamoga.weebly.com/uploads/1/3/1/6/131607866/gamezisu.pdf
    • https://malolikekex.weebly.com/uploads/1/3/4/7/134718462/limuzuvorex-guzanerokemidew-ganafiforixon.pdf
    • https://cdn-cms.f-static.net/uploads/4416136/normal_601d31b14c871.pdf
    • http://autoport76.online/honda_astrea_grand_service_manual99xfg.pdf
    • https://static.s123-cdn-static.com/uploads/4421630/normal_5fe4ff1267f2e.pdf
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/8234736.pdf
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/6067457.pdf
    • https://karivimefoga.weebly.com/uploads/1/3/4/3/134311068/4437409.pdf
    • https://fikosaxan.weebly.com/uploads/1/3/4/7/134753192/7106429.pdf
    • http://ighelpcenter.xyz/130970823978jtde.pdf
    • http://presentinsta.online/best_android_tablet_2018_under_10000l5i6u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tokudapele/gosawuxifiluke.pdf
    • https://s3.amazonaws.com/fonibinaraj/jio_phone_play_store_install.pdf
    • https://s3.amazonaws.com/zoxewudunigus/swisscom_tv_program_guide.pdf
    • https://s3.amazonaws.com/sizabo/9827638507.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df19.bin
b961a4427228095579a9931ec9b282f514976fdc59a9d6503a57043ef7af0c81
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF19 5240 bytes
font_01_sfnt_off0000f10c.bin
4e1e2fbbe5df0a5adab79b83ddd2daa9fa3d4991fbced6be730bc19568de1118
pdf-font-stream PDF embedded font (sfnt) at offset 0xF10C 10128 bytes
font_02_sfnt_off000113bd.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x113BD 4324 bytes