Malicious PDF — malware analysis report

Static analysis result for SHA-256 3216aedacbf26ec4…

MALICIOUS

PDF

66.4 KB Created: 2021-03-01 15:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 110aeef11d3b0ca46709b79b5547673b SHA-1: 23c76670fce6c6ba2ae875501647ee2e4df3003e SHA-256: 3216aedacbf26ec4d31f3a275d097a1eebec470c0d4b34a388e22d716cae93b1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=amazing+grace+notes+on+recorder PDF link annotation
    • https://kusavavatixe.weebly.com/uploads/1/3/4/8/134878613/sasuwaga-simuxod-xeguxezosala.pdfIn PDF document text
    • https://bujefodamefizup.weebly.com/uploads/1/3/1/0/131070612/11b2aa8994.pdfIn PDF document text
    • https://lujukote.weebly.com/uploads/1/3/2/7/132712447/7264085.pdfIn PDF document text
    • https://xedowekogo.weebly.com/uploads/1/3/4/6/134609622/dufan.pdfIn PDF document text
    • https://dobeluxujopi.weebly.com/uploads/1/3/0/7/130775615/noras.pdfIn PDF document text
    • https://cdn.sqhk.co/lukejisuvawe/3Cs6jjF/steamboat_springs_hot_springs_pool.pdfIn PDF document text
    • http://vashmaster.info/volkswagen_service_coupons7yw4g.pdfIn PDF document text
    • http://get3creditscores.info/59269846306g4f3s.pdfIn PDF document text
    • https://bazigumaxofiz.weebly.com/uploads/1/3/5/3/135383162/zafojeri.pdfIn PDF document text
    • https://vamalogobiw.weebly.com/uploads/1/3/4/6/134696595/1921786.pdfIn PDF document text
    • http://new-leggins.site/zujipuwio5480.pdfIn PDF document text
    • https://rofovotojoroko.weebly.com/uploads/1/3/4/8/134878837/vovekuguxegewarima.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ginutu/harvey_nash_group_plc_annual_report_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/how_does_the_dirt_devil_spot_scrubber_work.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/adobe_acrobat_reader_dc_installer_free.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_off0000c83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC83D 5268 bytes
SHA-256: f36cd1077900cdd1db81e045cf460ba313c4410e5b28e7f35cd482dea446387f
font_01_sfnt_off0000da13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA13 10232 bytes
SHA-256: 272fde497365ac6d74d2108ed5013bea475c6ea559faf6eb77b7cb0a6fa07a4b

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