Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f3c9daa2042209…

MALICIOUS

PDF

82.1 KB Created: 2021-03-08 01:00:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8a9a0147433645a834310f830b4fae88 SHA-1: b4531e7fe3c804515e0546bba418f62ca0177e68 SHA-256: 36f3c9daa204220974652c06369695570d64a129a6c7f1d5511877bbf4c25f7c
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://xezojetit.ru/wix?keyword=amelia+earhart+luggage+wikipedia PDF link annotation
    • http://vivekawiga.sportsontheweb.net/health_psychology_biopsychosocial_interactions_9th_edition_citation.pdfIn PDF document text
    • http://bovibuvebus.getenjoyment.net/lg_ac_error_code_ch_35.pdfIn PDF document text
    • https://gugajapu.weebly.com/uploads/1/3/5/3/135330564/84456b.pdfIn PDF document text
    • https://tojefatonixi.weebly.com/uploads/1/3/4/3/134379405/wumamaledotenusafene.pdfIn PDF document text
    • http://zitugaxusi.mygamesonline.org/sobivejugowejed.pdfIn PDF document text
    • https://loxazubak.weebly.com/uploads/1/3/0/7/130739809/1fdef814a0e952.pdfIn PDF document text
    • http://tanolugulutewu.medianewsonline.com/221637652.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/dedotesegisikukeranar.pdfIn PDF document text
    • https://kukonugaxa.weebly.com/uploads/1/3/5/3/135327287/goluf.pdfIn PDF document text
    • https://zitakutuseg.weebly.com/uploads/1/3/5/9/135994262/joreranubezus-botufozewise-gunefasadaban-mejaputipumifax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rabatelekovufar.myartsonline.com/30000966471.pdfIn PDF document text
    • http://wowadepadon.rf.gd/dusijatowenalamekimigebo.pdfIn PDF document text
    • https://5a4e7950-e122-4b3c-9cf7-894e7f5b1216.filesusr.com/ugd/76aeb6_3d6195b433e24b27b7d5dda9678eec31.pdf?index=trueIn PDF document text
    • http://nojupaven.rf.gd/siwilujigixuxulipiwebaxo.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/90668541666.pdfIn PDF document text
    • http://sewasijibakel.epizy.com/salary_breakup_format_in_word.pdfIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_0b1c6a6239a445b5bbbc139a24a2819a.pdf?index=trueIn PDF document text
    • http://zapusov.atwebpages.com/gupometatepari.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_off00010512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10512 5340 bytes
SHA-256: 2cc69276b12319c1795aeef2c19b9fba24c831031aad940d479f1de300f3da96
font_01_sfnt_off0001171f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1171F 10704 bytes
SHA-256: 895888bf02878876088094d6d1f7a61d16c5035c58a6fc9180ef03c379e4591e