Malicious PDF — malware analysis report

Static analysis result for SHA-256 59527f6ee94d1df8…

MALICIOUS

PDF

87.2 KB Created: 2021-03-29 10:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 575659b526a9b8890a018f47bb28cce9 SHA-1: a84b8dc54c52ef1de120c22101b4ce098beb6605 SHA-256: 59527f6ee94d1df8812572e0c29b87bfdd3361e7eb077a0a6294ac78fb72c094
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, appears to be a lure related to search terms, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/award?keyword=ghatna+chakra+pdf+in+english+for+uppsc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481064/normal_6023024baf01b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457847/normal_60268e9687d64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501995/normal_602a4807c8e66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444866/normal_604b6d720b6d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389354/normal_602c7b0599160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_60217ccd34f67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_601b69a8c3391.pdfIn PDF document text
    • http://tryici.xyz/59025038180gkpen.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383131/normal_5fdfd9f0a4441.pdfIn PDF document text
    • http://vk-settings-change.online/dell_optiplex_780_mt_memory_upgradeno22r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477626/normal_5fd77e7b1983b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/448758c1-2499-4afb-8f3a-fae11fd01beb/formato_de_solicitud_de_empleo_para_rellenar_word.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/gideon_s_trumpet_guided_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5539d357-4522-4db2-bd0d-63cefe66ed70/zmodo_how_to_set_up.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/35855766475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e1a7ead-5c5d-4ddd-b8ad-6cd891029af4/xomomosoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/tezogoponuvek.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/67783363426.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/what_is_the_difference_between_bosch_300_and_500_series_dishwashers.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/bold_type_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/91737332368.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85D 5512 bytes
SHA-256: ced639e162b56d5f381524e850b59a003263779fa54dc7c4882c6ef9fc7d20bb
font_01_sfnt_off0000eb18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB18 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off0000f67b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67B 11048 bytes
SHA-256: 0283ed3eddd8a6754cd9a327b8340f86524dc71b1af96370efd999edb24db5b5
font_03_sfnt_off00011c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C5B 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
font_04_sfnt_off000131b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131B0 8172 bytes
SHA-256: f25adab5ca61301853825e165eef472629d86593120a4122f4dc3d681411c337

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