Malicious PDF — malware analysis report

Static analysis result for SHA-256 7612d3d42a263c79…

MALICIOUS

PDF

79.8 KB Created: 2021-03-14 06:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 2aa856bf7c50eb35d5fa404e1ca38021 SHA-1: 56a2228242d9b2991961f2ce1101c932dc89be14 SHA-256: 7612d3d42a263c79d2c085e9a72e64f868f239d9baf59a5d518cea768924276f
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a primary one pointing to 'bologen.ru' disguised as a search result for 'step brothers full movie google docs'. This suggests a phishing or credential harvesting attempt, or a lure to download further malware. No scripts were extracted, but the PDF structure and embedded links are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://bologen.ru/wix?keyword=step+brothers+full+movie+google+docs PDF link annotation
    • http://bagomebefekixob.getenjoyment.net/surah_yasin_arabic_to_bangla_translation.pdfIn PDF document text
    • http://vebifitapex.mypressonline.com/introduction_to_antiphilosophy.pdfIn PDF document text
    • http://lewuvumo.sportsontheweb.net/pedesefigepa.pdfIn PDF document text
    • https://cdn.sqhk.co/tinodifozeza/3DUjcgi/wubijurotafaxakagej.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/9889731616.pdfIn PDF document text
    • http://jalojewaga.mypressonline.com/numiresi.pdfIn PDF document text
    • http://nuxuzuruguli.mypressonline.com/manual_de_primeros_auxilios_cruz_roja_colombiana.pdfIn PDF document text
    • http://xubajur.mygamesonline.org/what_is_a_boundary_line_in_math.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/56538519310.pdfIn PDF document text
    • http://dedukali.22web.org/73816042974.pdfIn PDF document text
    • http://tadinos.22web.org/ludedubizol.pdfIn PDF document text
    • https://cdn.sqhk.co/nixagigad/jjhfATm/wavepufilutebelijimiso.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/JzhZjgi/best_steven_universe_music_songs_2019.pdfIn PDF document text
    • http://bizowokare.getenjoyment.net/que_tipos_de_comunicacion_hay_en_la_actualidad.pdfIn PDF document text
    • https://cdn.sqhk.co/nemizuxe/hicc4LL/67675340113.pdfIn PDF document text
    • https://cdn.sqhk.co/sewiboveso/bZhijfg/34812454430.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/60274441175.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kemesid.onlinewebshop.net/poviruvogibibavujiluzuzo.pdfIn PDF document text
    • http://tilanetojik.rf.gd/60185608698.pdfIn PDF document text
    • http://vegubom.atwebpages.com/auriculoterapia_francesa.pdfIn PDF document text
    • http://mozutulobiris.onlinewebshop.net/sharp_xe-a207_how_to_use.pdfIn PDF document text
    • http://dutataratoboruj.rf.gd/95280733188.pdfIn PDF document text
    • http://jelolit.epizy.com/85052333744.pdfIn PDF document text
    • http://kotutuvotijol.rf.gd/majamunitovujopo.pdfIn PDF document text
    • http://puwogufipuja.epizy.com/80690940260.pdfIn PDF document text
    • http://welididoseburiv.epizy.com/32127332648.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_off0000f3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CE 5664 bytes
SHA-256: 201f815a36e75d177612b082bdd2a8c50479bd50eb0dfbab4dfef48a354073e1
font_01_sfnt_off000106f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F3 13108 bytes
SHA-256: 915f53a1c5546e2f74d8120df852e23b11fee3b4a88b7a77e0a3d8bc2bf7493f

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