Malicious PDF — malware analysis report

Static analysis result for SHA-256 60fbd2601364c2a6…

MALICIOUS

PDF

76.7 KB Created: 2021-04-01 12:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2c85a68672ba3cb62878e17ca946ae25 SHA-1: d7c2781e4dbbbe10d05259a85c5f0454e685d9a0 SHA-256: 60fbd2601364c2a6d94ed788f41e54ba23cc980107aa793627561364fe5f4dba
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

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 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.
  • 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://dafemum.ru/strik?utm_term=how+much+is+the+keurig+at+costco PDF link annotation
    • http://revujutipisan.22web.org/jeffree_star_beauty_killer.pdfIn PDF document text
    • http://circleshtang.xyz/vesulagglpwv.pdfIn PDF document text
    • http://nudistoff.club/solitary_man_movie_parents_guidejd3oa.pdfIn PDF document text
    • http://twoup-viktoria.online/kirogajevefitowokuzudutudn2wk.pdfIn PDF document text
    • http://bedinujaketapur.22web.org/zuduzotibilakosarem.pdfIn PDF document text
    • http://peuly.xyz/what_foods_causes_fodmap_intolerancewiy4t.pdfIn PDF document text
    • http://springtea.space/unidad_1_etapa_2-ws4_answerscwf04.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_462c2d9fb38a403589ec0774609dff20.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd076e22-1def-4873-83b4-d21d42bdf88a/46121069416.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/codingbat_string_1_answers.pdfIn PDF document text
    • https://02314edc-d025-420b-9d62-795437f25c47.filesusr.com/ugd/4f0fc1_e7a612489f0e47a98c2584915563c5db.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/formalits_cession_de_parts_sociales_entre_associs.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/gumiluzemobixuxexulijal.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/79492365883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3965b9fc-bd01-4f45-b59c-dad86ff852a9/marketbeat_best_penny_stocks.pdfIn PDF document text
    • http://tetedar.epizy.com/how_to_replace_battery_kidde_i12010sco.pdfIn PDF document text
    • http://wewepov.rf.gd/que_significa_el_tipo_de_sistema_de_archivos_es_raw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/881e20a5-4256-4035-b8b8-9fa3ad0fca89/what_waterpik_do_dentists_recommend.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26d95191-cb48-4050-9927-8d4b14828d9a/2004_malibu_crank_no_start.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/11322965644.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_off0000edbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 5296 bytes
SHA-256: 540d8b0177e36ebbf44e68ea8845dc1818230c674b49eb18ac7d58c4ce49f6cb
font_01_sfnt_off0000ffa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA8 11000 bytes
SHA-256: a6edaa181e4dd6f7ab726a548167c2c82f17db013c58ff63734fe3529cfd92f9

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