Malicious PDF — malware analysis report

Static analysis result for SHA-256 d73b3985547a8ac1…

MALICIOUS

PDF

72.6 KB Created: 2021-02-26 03:12:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9b66a2b4ba30e564ec0e499dc957961f SHA-1: 0c287f11c0947ae0d5cb6d00199fdfd17d055da4 SHA-256: d73b3985547a8ac1a4a0dd238d54301151eae704fdfd530afcad3d8a21caa64c
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://druttle.ru/award?keyword=how+to+change+the+settings+on+a+honeywell+thermostat PDF link annotation
    • http://astrology-personal.online/biblia_de_jerusalen_2009pdi9w.pdfIn PDF document text
    • https://jenodavosu.weebly.com/uploads/1/3/0/7/130775827/zilaw-nofoli.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/goodreads_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xidatelo/hjhTage/mivubudodizixufitonodi.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/61059561230.pdfIn PDF document text
    • https://dajilifu.weebly.com/uploads/1/3/4/8/134891154/mikidoz.pdfIn PDF document text
    • https://vuzavadakugodo.weebly.com/uploads/1/3/4/8/134857872/xaxekef_duvuvupagut.pdfIn PDF document text
    • https://retevewaluwur.weebly.com/uploads/1/3/4/6/134600892/pesozapoxopitu-pikaparimavufow-wolat.pdfIn PDF document text
    • http://xariketixagat.mypressonline.com/how_much_does_a_construction_manager_make_in_california.pdfIn PDF document text
    • http://koreanluxe.com/98774686827o0ean.pdfIn PDF document text
    • https://bezijenogekise.weebly.com/uploads/1/3/4/8/134875893/bemajuripovopi_zitapawoja_nogizuzoxofudu.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/jijglYg/7501822945.pdfIn PDF document text
    • https://mebugiroxubo.weebly.com/uploads/1/3/0/7/130776511/8305691.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magajavopisili.epizy.com/antivirus_free_for_pc_windows_8.pdfIn PDF document text
    • http://figapow.epizy.com/termination_letter_template_uae.pdfIn PDF document text
    • http://jagofebasej.epizy.com/tinuvasubofixaf.pdfIn PDF document text
    • http://sikejafomanama.epizy.com/canon_mf4450_toner.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_off0000e133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE133 5368 bytes
SHA-256: 98af59263abd7ab6f0af7bdb153a8e11c7eb254cb987d8745a3e120be6b3a54e
font_01_sfnt_off0000f362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF362 9936 bytes
SHA-256: ffef1fac6376aed12c223750d10cd8240a743b3eb527b8a09eb7a7dda0baf557