Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cfffffd81e7a6e3…

MALICIOUS

PDF

69.1 KB Created: 2021-03-13 13:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4de5bb4eb98ee84dfcc896ac7c186d1a SHA-1: f2913efd4d54e296601294e9f02b7ca5dd475a6a SHA-256: 5cfffffd81e7a6e3fbebe32bb671138f6ad7b0f3acdccde35454ade37c5745a8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/award?keyword=south+african+biscuit+recipes+pdf PDF link annotation
    • https://namowabe.weebly.com/uploads/1/3/4/0/134000139/903057.pdfIn PDF document text
    • http://derapom.iblogger.org/viwinasa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413975/normal_5fdf2de9ab751.pdfIn PDF document text
    • http://ouily.xyz/definition_of_economic_sustainabilityola2k.pdfIn PDF document text
    • https://gojanaribebiw.weebly.com/uploads/1/3/1/4/131437307/vemuxuzib.pdfIn PDF document text
    • http://gajozemexip.22web.org/vozuzik.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/avani_avittam_mantras_in_tamil_2018y5o6r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_6030214bb0908.pdfIn PDF document text
    • http://detonic-romania.website/british_superbike_riders_namesa5cvy.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/20505381380xur2y.pdfIn PDF document text
    • https://bibatuzasofobi.weebly.com/uploads/1/3/4/8/134879938/fixif.pdfIn PDF document text
    • https://nijasofefovo.weebly.com/uploads/1/3/4/7/134719995/baledeneka.pdfIn PDF document text
    • http://aslixan.com/macromolecule_comparison_table_answer_keya41yd.pdfIn PDF document text
    • http://videohost.space/pijubewunufivivezcexb.pdfIn PDF document text
    • http://item-mask.top/benenafisoxqxs3j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383568/normal_6024ed6cc689e.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/sefabe/emotional_intelligence_and_leadership_performance.pdfIn PDF document text
    • http://tagitefidunun.epizy.com/bsa_lion_den_leader_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/stock_market_trading_basics.pdfIn PDF document text
    • http://bozopuzele.epizy.com/84344620906.pdfIn PDF document text
    • http://gavenivifi.rf.gd/duwojoredafovazakamava.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/modele_attestation_formation_125.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_off0000d100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD100 5452 bytes
SHA-256: 87bf2a425b5cdf185e92ec38866c29e308d905ba2badbde7a79dfd368113b4ad
font_01_sfnt_off0000e381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE381 10332 bytes
SHA-256: 512439abc6e152d763f7df4c8526c650828e767e3bf1a7db2f0d25bd6f114fbd