Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b94b857f970e48e…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 13:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c034cf1f389da804f4b26714866c1ac2 SHA-1: 4343cb996a216ff9c8afe5a53514dc39dec958ec SHA-256: 0b94b857f970e48e8754279b4f0543771a40e9b87ac141b6dc3a7ba3b634cc65
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/award?keyword=ice+breakers+duo+mints+strawberry PDF link annotation
    • http://rezisekuvaz.mypressonline.com/wunilal.pdfIn PDF document text
    • https://gokivasinu.weebly.com/uploads/1/3/4/3/134334496/6750978.pdfIn PDF document text
    • https://tutuludoj.weebly.com/uploads/1/3/0/8/130874598/dopopifeduda-wenobikidemiw-pelapidufekaj.pdfIn PDF document text
    • https://donoreto.weebly.com/uploads/1/3/0/9/130969624/31a9d164d8.pdfIn PDF document text
    • https://povilaromegew.weebly.com/uploads/1/3/4/4/134486615/luvew.pdfIn PDF document text
    • http://tijukilebag.getenjoyment.net/glossary_of_cost_accounting_terms.pdfIn PDF document text
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/tavujeba.pdfIn PDF document text
    • https://gopogusefivow.weebly.com/uploads/1/3/1/4/131406686/8abd98b26.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/133efaeffc725a.pdfIn PDF document text
    • https://detitominaxa.weebly.com/uploads/1/3/5/3/135304018/zivap_dojapuweze_wedidagupama_zabesozuge.pdfIn PDF document text
    • http://kuvelopomegemes.iblogger.org/39977076056.pdfIn PDF document text
    • https://xesofizagib.weebly.com/uploads/1/3/4/4/134491847/0b3de07a.pdfIn PDF document text
    • https://titoboxe.weebly.com/uploads/1/3/0/8/130874676/11432c4b8505715.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://keximidurowu.rf.gd/20515052581.pdfIn PDF document text
    • http://kozusabupo.epizy.com/girl_scout_yell_and_song_lyrics.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/2005_cts_v_transmission.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/how_to_read_schematics_electrical.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_off0000dd11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD11 5388 bytes
SHA-256: 817f2af77ec4f53125cffd0e8513e22f332c357d70dc58ade75323b06ff21d93
font_01_sfnt_off0000ef60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF60 10956 bytes
SHA-256: 4bd08d76c6d8a5584c28c99726aa8ea743f6310a0d276bf67662670e33c1cdfa

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