Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea973ff4bd8ee824…

MALICIOUS

PDF

83.9 KB Created: 2021-03-05 20:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a596c09d3fb36993b363c04dfd88f8b2 SHA-1: 2acb9d5ece0efa45542812bf98dd7fade3cba78c SHA-256: ea973ff4bd8ee8243e4ed3b0420586658f43f73c86e5d67b7912ee7b9c2441e1
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs, many pointing to disposable hosting, and is described as a link farm. The presence of external URIs and the link farm characteristic suggest the document's primary purpose is to redirect users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/wix?keyword=ranch+view+middle+school+ratings PDF link annotation
    • https://cdn.sqhk.co/fejavegiwo/hehdgcM/crossing_church_of_the_nazarene.pdfIn PDF document text
    • http://iuts.space/mississippi_drivers_license_permit_requirementsqtsq8.pdfIn PDF document text
    • http://lestyprin.online/jowitexudexarozeliwirorumq928c.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/26329393944.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/bhagavad_gita_chapter_15_iskcon.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/ZihjcFM/32343440531.pdfIn PDF document text
    • https://vebajixumese.weebly.com/uploads/1/3/4/4/134483039/farawenijuw.pdfIn PDF document text
    • https://sowobufujugazid.weebly.com/uploads/1/3/0/8/130873997/dagetilenas_divawiwikagipo.pdfIn PDF document text
    • http://rajukilodagoje.mygamesonline.org/puvilalema.pdfIn PDF document text
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/gesanugajirilabazixa.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/japotirobi.pdfIn PDF document text
    • http://busurman.space/xawixatekubapf2sgg.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/chaFegg/58325529267.pdfIn PDF document text
    • http://ipatovaalena.ru/89094848842hkfvu.pdfIn PDF document text
    • https://fodumalape.weebly.com/uploads/1/3/2/6/132695584/3173493.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/league_of_legends_patch_notes_11.3.pdfIn PDF document text
    • https://nakidero.weebly.com/uploads/1/3/4/5/134524904/5866421.pdfIn PDF document text
    • http://fafijitesulexiz.mygamesonline.org/what_is_the_traditional_music_of_korea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nibizuladode.onlinewebshop.net/cyberpunk_2020_rockerboy_sourcebook.pdfIn PDF document text
    • https://104e0e48-a4c2-4a03-8647-06ef64d4e6ac.filesusr.com/ugd/e2c6c1_5bc305e1c92447eeb72c4444cc493e7a.pdf?index=trueIn PDF document text
    • http://bolirazebaf.myartsonline.com/manual_de_pioneer_avh-270bt.pdfIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_22a22112047741c6a6029f616e574d15.pdf?index=trueIn PDF document text
    • http://jezevenakos.myartsonline.com/ecological_succession_worksheet_answer_key.pdfIn PDF document text
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_51cde687fe834b68aa41dc9136b192e1.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46B 5512 bytes
SHA-256: 33aad7ebb4dde5cf46402916297a54d59fbdb0a913da4a9b115ee11d52720e7b
font_01_sfnt_off0001070f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070F 10592 bytes
SHA-256: 26d79b17291fc8ff93e73e44f92402f5d01548c1ffb369f86c087cccf0422649
font_02_sfnt_off00012ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BA7 16396 bytes
SHA-256: 1d65b359f949119e535735797a9b37f714bb0f90ec02b3839195e98467009723