Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e562c8869383b7…

MALICIOUS

PDF

70.2 KB Created: 2021-02-28 04:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 5bfad8dd956cc5ba7284264888a62d7a SHA-1: efdc7c7910af855688ceb1c431538e31b95c5931 SHA-256: 36e562c8869383b7b3cf29c6ab4d15476ff4eee5a4f455ad3f12a96493813b7a
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'zajinet.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to reference search terms related to computer hardware, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/123?utm_term=msi+z97+gaming+5+compatible+cpu PDF link annotation
    • http://top-salez.site/econometrics_final_exam_questions_and_answersuoce6.pdfIn PDF document text
    • http://micrometerdigital.xyz/chevrolet_equinox_2011_owners_manualgewuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450256/normal_603af1b46030d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378386/normal_5ffd4ae1dfa42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428061/normal_602af3f554442.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450158/normal_5ffe23f3d2a0a.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/32079744438.pdfIn PDF document text
    • http://optarfes.com/how_many_calories_in_a_breakfast_quesadilla_from_taco_bell9x760.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/trigonometric_ratios_word_problems_worksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_60255ddc88f4b.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/fodose/osmosis_lab_report_abstract.pdfIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/corporate_identity_template_freepik.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/lazojopilubereteso.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/arch_linux_iso_64.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/troy_bilt_pony_mower_deck_belt_routing.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/vofelozetopupigegebewe.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_off0000d0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E0 5712 bytes
SHA-256: b3ca5213d3083fa3bc3851df7743d9840cf7b1a5b70bae37975197dc97f405f7
font_01_sfnt_off0000e463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE463 11132 bytes
SHA-256: 30354bda80581b89e22bb7f12194b5c263e52b660a4476e84b90fe24f137629e

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