Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0922406c982b4d9…

MALICIOUS

PDF

75.3 KB Created: 2021-04-02 07:36:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e446a6205a9394281a4023987617d4ee SHA-1: 97fdbb3492dcf9e7a202cf2c0fb0e9d6fea14c93 SHA-256: d0922406c982b4d9f15272b4dd9667c03ca0989e097205930f4bf7cf23f1e574
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/strik?utm_term=who+are+the+olympians+in+percy+jackson PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458852/normal_60553533bca32.pdfIn PDF document text
    • http://nejuwenazi.iblogger.org/lineage_2_high_five_spellhowler_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/vopuvafamiw/djj2zhg/pubizazipobemusapopuno.pdfIn PDF document text
    • http://nozafokow.iblogger.org/whats_the_hardest_accent_to_understand.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380869/normal_5fcd247e252e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382790/normal_5fc78e197b1ce.pdfIn PDF document text
    • https://cdn.sqhk.co/fopikudapom/Gjijfgj/53720330020.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/fynWvhe/electronic_projects_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/ghghdhe/hustle_castle_mod_apk_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kafopazam.epizy.com/22432837871.pdfIn PDF document text
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_17242f3fdb8347a4823ebaedca315318.pdf?index=trueIn PDF document text
    • http://mebexadesojixip.rf.gd/adapted_physical_education_assessment_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/225eefd5-e311-45d7-9fa1-b7e82e844a46/ca_rental_application_forms.pdfIn PDF document text
    • http://parisexubuvi.rf.gd/piguviz.pdfIn PDF document text
    • http://jarebavax.epizy.com/is_300_lexus_2021.pdfIn PDF document text
    • https://dfdccaec-9019-42eb-ab8c-14eed22d5f88.filesusr.com/ugd/2e00cc_e95d883a903742639fe473005f209f2b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/012a6398-dc94-49a1-8099-6a7c58701ff1/34534270018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a258888-e57f-4ceb-ad44-4df120f7f31f/pid_valve_symbols_legend.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/mapa_del_mundo_politico.pdfIn PDF document text
    • https://64b67c6e-fbbd-4787-add8-9ed3e274c95c.filesusr.com/ugd/eb6612_c5ef2822d934493f9ea0fe73b1db0869.pdf?index=trueIn PDF document text
    • http://gisipusizen.rf.gd/sewonizeweme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5095c091-cef5-4079-8478-91b807870cfa/19770555594.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef0cb93-10a1-4dc1-a4d5-956b089be16c/lozigaminifepozonupik.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_off0000ea79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA79 5428 bytes
SHA-256: 12dcb34c193f3cb118a6e58e957820ee5534a6fc58905e5297454193ac22c270
font_01_sfnt_off0000fcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDD 10228 bytes
SHA-256: 82dfd3fee8ff00cd7e051ab531963690de950ef588fa3454ff2992156210f5ca

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