Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86cce1ad2722dcf…

MALICIOUS

PDF

83.3 KB Created: 2021-03-13 23:31:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66d26118e0ce1ee93e007432f7454e41 SHA-1: 2578af819bd904b2391a772a4b2dd2273046c209 SHA-256: a86cce1ad2722dcff624f8ff25be88f4163cee8a807a6b96e31f31beef525f10
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into visiting a compromised 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://bologen.ru/strik?utm_term=automotive+service+advisor+job+description+resume
    • http://dumigegin.medianewsonline.com/meravuz.pdf
    • http://tifoxikutawe.sportsontheweb.net/15241863093.pdf
    • http://dilawiputonu.mypressonline.com/how_to_apply_gentle_leader_collar.pdf
    • http://riniwodifole.medianewsonline.com/cuales_signos_se_atraen.pdf
    • http://kovativegapok.getenjoyment.net/zitobovizutajisezujeg.pdf
    • http://store50off.info/22815817971n775o.pdf
    • http://sutivetowit.mypressonline.com/91012951272.pdf
    • http://badoxik.scienceontheweb.net/how_to_lean_body_mass.pdf
    • http://sipipewawezizuf.getenjoyment.net/nolalipanaxufujalukovegi.pdf
    • http://sajiwurejedetu.sportsontheweb.net/how_to_make_liquid_soap_with_coconut_oil.pdf
    • http://unityfree.xyz/zebra_gk420t_driver_download_windowsugpdn.pdf
    • http://lnstagramverifiedbadgeshelpcenters.net/bitinebaguwamelegulifik27oym.pdf
    • http://woziwowariv.sportsontheweb.net/bebeluropafiwiwupikuze.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sorisavitekinuj.onlinewebshop.net/deburerenikowu.pdf
    • https://s3.amazonaws.com/difigomisosak/free_bar_inventory_excel_template.pdf
    • https://uploads.strikinglycdn.com/files/374943be-f690-42d9-81e3-20942b07bd71/femik.pdf
    • https://s3.amazonaws.com/fexuror/45532160056.pdf
    • https://uploads.strikinglycdn.com/files/b20020bf-a1a4-4fdb-98d3-eef842aa4702/netgear_fvs318n_port_forwarding.pdf
    • http://wenibeliso.atwebpages.com/sueo_de_una_noche_de_verano_william_shakespeare_pelicula_completa.pdf
    • https://uploads.strikinglycdn.com/files/0924542b-7ff6-4d03-abe1-c76aa57fc1b3/2181593264.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_off000104bb.bin
1e7a8894753317bec4c2682a4584e0571017f5ec9befa9d0b543c306706dab66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104BB 5452 bytes
font_01_sfnt_off00011735.bin
c33c0ba1700255ba064c7cf724b34bc5bc0bb24af5bd573a2f5cde3e615bd459		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11735 11976 bytes

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