Malicious PDF — malware analysis report

Static analysis result for SHA-256 13647204183a8ef2…

MALICIOUS

PDF

92.3 KB Created: 2021-04-15 11:45:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 581ebe77dcba7c692cfabaa9d3a923ff SHA-1: 6c5ac5d179a1bd734d1ce6a40a69cfba68716aed SHA-256: 13647204183a8ef222846b7ced3ffea5ed726c181478502ba1332dbdaabdccf0
216 Risk Score

Malware Insights

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

This PDF is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam and a password-protected archive lure. It contains multiple suspicious URLs, including one pointing to 'lnstagram-support.live', which is likely part of the phishing attempt to trick users into downloading a further malicious payload. The document's structure and content strongly suggest a social engineering attack aimed at defrauding the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/strik?utm_term=what+does+a+system+administrator+do PDF link annotation
    • http://kefets.xyz/python_basics_youtubeodcah.pdfIn PDF document text
    • https://cdn.sqhk.co/vusanutoj/iSIggeV/bacilos_gram_negativos_fermentadores.pdfIn PDF document text
    • http://lnstagram-support.live/jabetivisurasukaroc53qo.pdfIn PDF document text
    • http://milanbeachs.space/focusrite_scarlett_2i2_drivers_redditi72do.pdfIn PDF document text
    • https://cdn.sqhk.co/rojogonezejo/ejfiihf/tapigo.pdfIn PDF document text
    • http://skout.tech/wow_classic_druid_pvp_gear_guide4sdgt.pdfIn PDF document text
    • http://artyom.guru/how_to_port_my_mobile_number_onlineb74a1.pdfIn PDF document text
    • http://zootime.store/482811982469fn7q.pdfIn PDF document text
    • http://hot-money.fun/how_to_test_a_dogs_temperamentyrh6i.pdfIn PDF document text
    • http://dusakopu.iblogger.org/carry_on_my_wayward_son_supernatural_finale_song.pdfIn PDF document text
    • http://digitalmedialit.com/salesforce_service_cloud_certificatione4cr5.pdfIn PDF document text
    • http://jebumivusesujan.iblogger.org/ribevonewisasak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://labazesunug.epizy.com/irregular_verbs_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/bicarbonate_in_water_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/kumpulan_lagu_atta_halilintar.pdfIn PDF document text
    • http://zijozuf.epizy.com/how_to_reset_netgear_ac1900_wifi_extender.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/guredulesibesomodax.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/chaka_demus_free.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/3595310008.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/rasikuvodutiwiduvuwulo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ED1 4936 bytes
SHA-256: eafa7755a217a0c3d048de569e12790b1b5ac87c05460e356df94fad561f1a40
font_01_sfnt_off00012f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F77 11156 bytes
SHA-256: 03e3ef4f1b91133a548195eebda16fec12ac6edbb04a18c4253c9983ef1c49e8
font_02_sfnt_off00015579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15579 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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