Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db2b4c8e88c2eef…

MALICIOUS

PDF

70.4 KB Created: 2021-03-24 19:23:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 056e554e1f82e3c8d2aa65584c3d56ca SHA-1: 3a58eada8620cd928477fc615c86eba27670b44d SHA-256: 6db2b4c8e88c2eef9dcc74c2a4603771492a7c08b442c0f4b4358c9088f2e322
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable or unknown domains, suggesting a link farm or redirection scheme to host malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'baby girl names in marathi', which is a common tactic for phishing or scam operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=baby+girl+names+in+marathi+with+meaning+in+pdf PDF link annotation
    • http://ralugugifoxatir.scienceontheweb.net/zivurodexem.pdfIn PDF document text
    • http://logawedulukudan.mywebcommunity.org/vudefabijemesigibakaf.pdfIn PDF document text
    • http://tubesebove.medianewsonline.com/estudio_para_charango_chords.pdfIn PDF document text
    • http://jafalule.22web.org/81305821022.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/3461791345.pdfIn PDF document text
    • http://kezijumedet.mypressonline.com/53341384243.pdfIn PDF document text
    • http://zujoxuxosaja.getenjoyment.net/abraham_joshua_heschel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_0cf1a11721414fb1ba4b63717c924c3a.pdf?index=trueIn PDF document text
    • http://jefuzogal.epizy.com/nuwewipopubepilew.pdfIn PDF document text
    • https://3f5765b5-411c-4b28-96d1-a1e3b219bcee.filesusr.com/ugd/ca847e_42b2e9bb75e14770802ec73cd65bc6f9.pdf?index=trueIn PDF document text
    • http://tikomiwewo.atwebpages.com/basic_life_support_chart.pdfIn PDF document text
    • http://vusanaxipunuli.rf.gd/dororo.pdfIn PDF document text
    • http://tagemafizikevu.rf.gd/60180852288.pdfIn PDF document text
    • https://a91873a8-1f5b-4151-915d-af39eb211f25.filesusr.com/ugd/3f80ec_ee6b55908aed46a9bf10a8a45fa163f9.pdf?index=trueIn PDF document text
    • https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_7a285bf9157f4e97888c514b379811ba.pdf?index=trueIn PDF document text
    • http://rapuzivawa.epizy.com/tejaxotis.pdfIn PDF document text
    • http://lolufijufafoz.rf.gd/aiag_spc_manual_espaol.pdfIn PDF document text
    • http://lokuweva.rf.gd/53040415902.pdfIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_06b5114e840c40cc824545bd4d2a5d51.pdf?index=trueIn PDF document text
    • http://bonerewutejipa.rf.gd/80645367646.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_off0000d463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD463 5836 bytes
SHA-256: 3bab9a3c0821e9e75e96ae1afd3f797704746d926452a632dc6fe062af6228f9
font_01_sfnt_off0000e82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82F 10496 bytes
SHA-256: ae68b4454c1dab420856e3635840ac7da92cacb2188955384ba63edd7ba6ee5f

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