Malicious PDF — malware analysis report

Static analysis result for SHA-256 209479e08bd7d04f…

MALICIOUS

PDF

78.3 KB Created: 2021-05-03 11:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7faa8d093121b9c1f201e6864a03b279 SHA-1: a3a165463bc4c827d2744e876a92f8dc324559a2 SHA-256: 209479e08bd7d04f01de3feb14da4f85d64f11f55bbd638e7b65b3a291e34549
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://xezojetit.ru/strik', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'dominos cheese burst pizza'. No scripts were extracted, but the presence of external links and the nature of the detection suggest it's designed to lead the user to a malicious site.

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://xezojetit.ru/strik?utm_term=how+to+make+dominos+cheese+burst+pizza
    • https://cdn-cms.f-static.net/uploads/4456116/normal_6010103a9ae21.pdf
    • http://lisipezasuk.iblogger.org/juponumimuxogose.pdf
    • https://cdn-cms.f-static.net/uploads/4411681/normal_5fd9cff5bf08f.pdf
    • http://kujubawakini.22web.org/vabenazuvinigoxenev.pdf
    • https://static.s123-cdn-static.com/uploads/4414335/normal_5fcb016296981.pdf
    • https://cdn-cms.f-static.net/uploads/4425909/normal_60405f0b405a6.pdf
    • http://regikumavow.22web.org/ziruninuwe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://28546a20-d0cc-4b82-bb4f-6711990cd5a3.filesusr.com/ugd/0bcf16_14652c0a61dd49b8ba9d68d0658d308b.pdf?index=true
    • https://s3.amazonaws.com/tunenijexe/la_ciudad_y_los_perros_audiolibro.pdf
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_501ecf313c6a4d0c9d9b76aa61b3c522.pdf?index=true
    • http://posinumufupe.epizy.com/antenatal_care_nice_guidelines_2020.pdf
    • https://52431b39-7396-4b0c-bcaf-ab72d449a1bf.filesusr.com/ugd/f8cef3_61970ad88fb6451d9cd4ede7d994b540.pdf?index=true
    • http://wopapaxepesibad.epizy.com/dexcom_clarity_reports_app.pdf
    • https://s3.amazonaws.com/domegagowevag/adductor_strengthening.pdf
    • http://xamukuxoze.epizy.com/energia_de_biomassa_florestal.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f40d.bin
1687a39eb3036fc10054219289f169dec20edb332ea5c868c397f8c4572307ce
pdf-font-stream PDF embedded font (sfnt) at offset 0xF40D 5588 bytes
font_01_sfnt_off000106ef.bin
2af9ecd5260812ab7271b6748f1f8d7d9a74ccbaf8421dfa0763c4239fe5bf66
pdf-font-stream PDF embedded font (sfnt) at offset 0x106EF 10848 bytes