Malicious PDF — malware analysis report

Static analysis result for SHA-256 39102b4d85266efe…

MALICIOUS

PDF

76.2 KB Created: 2021-02-10 22:17:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bb2b30541949086a608510af512cbf65 SHA-1: 0a7cacf0a3b7cd73655a38fe6d7b76bd4a43bf74 SHA-256: 39102b4d85266efee835b8111d09de2cf93fca88e1c780a03685be71f086b0d3
184 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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=american+cardiology+guidelines+nstemi PDF link annotation
    • https://cdn.sqhk.co/xasakeza/mgfPPhd/battery_tender_plus_how_to_use.pdfIn PDF document text
    • https://cdn.sqhk.co/difigobon/Ihdig3a/6540269977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413000/normal_60225e5c7a5b2.pdfIn PDF document text
    • http://privateguardingserviceagainstdanger.site/business_english_test_b1ktyrn.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/tugeraxo7aerj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465557/normal_5fd299a12b5a1.pdfIn PDF document text
    • http://dajinanumiki.iblogger.org/former_spouse_meaning_in_telugu.pdfIn PDF document text
    • http://axecheat6.xyz/introduccion_al_derecho_abelardo_torre_libro8nyuw.pdfIn PDF document text
    • https://cdn.sqhk.co/gagobuniponi/hiif6Xw/jolexebidakifafal.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/tarajix/72379633439.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/tesda_assessment_form.pdfIn PDF document text
    • http://jamurujitexezi.epizy.com/pikisanidikig.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/11391973258.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/regororarutorinave.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/94794700921.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_off0000ed5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5D 5348 bytes
SHA-256: d71f1a1820be48f88bca57cca8278b45ac2da2a80813b069bb39d40c594ac903
font_01_sfnt_off0000ff7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7D 10676 bytes
SHA-256: 507a5df1584f7c520f9ef9f9e813dd7fa797fa7db4764cc26a872f70feac89c6

Open this report in the interactive analyzer, or submit your own file for analysis.