Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e31cbe628155ea2…

MALICIOUS

PDF

189.7 KB Created: 2021-03-17 13:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5940762de5ce3f6f13495b138e7eab20 SHA-1: 248016341bcc1e88228d273a054e9f47f479a5b2 SHA-256: 3e31cbe628155ea276633c7da92db9a2c38ef64d5a19935724f9112f81cd6fc2
136 Risk Score

Malware Insights

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

The file is identified as malicious by ML classification and ClamAV, exhibiting characteristics of an advance-fee scam. The document body, though heavily obfuscated, suggests a lure related to physical chemistry experiments and prize notifications. The embedded URL `https://mezovuduw.ru/award?keyword=physical+chemistry+experiments+pdf` likely serves as a landing page for this scam, aiming to trick users into paying fees for non-existent prizes or parcels.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • 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.
  • 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://mezovuduw.ru/award?keyword=physical+chemistry+experiments+pdf
    • https://pobifixakije.weebly.com/uploads/1/3/4/4/134445477/ridodezalafax-tomezunenexe.pdf
    • http://winoraama.fun/brothers_in_arms_3_download_for_androidsviab.pdf
    • http://euroshopmn.space/62617833545h3s2m.pdf
    • http://liketsven.xyz/jetpack_hero_miami_crime_old_versiontojca.pdf
    • http://texewofe.22web.org/ambulance_sound_clip.pdf
    • http://nesobaka9.xyz/62096716599mj6mt.pdf
    • http://baranaydin.org/7415345969589ncz.pdf
    • http://nupifijaw.getenjoyment.net/bell_hooks_teaching_to_transgress_introduction_summary.pdf
    • http://razixir.22web.org/digital_marketing_agency_company_profile.pdf
    • http://lianhua.life/mubikuremiletumuxg877.pdf
    • https://dopovubejaxow.weebly.com/uploads/1/3/4/0/134017692/c567f.pdf
    • https://tufamivobanode.weebly.com/uploads/1/3/0/8/130814219/6127819.pdf
    • http://berkeciftci.net/51491128856eqrqw.pdf
    • http://heliusdesign.ru/is_game_of_thrones_books_completeqtpku.pdf
    • http://sandwichhq.club/graphtec_ce6000-60_driver_for_macaxbyt.pdf
    • http://womans30planet.com/accordion_sheet_music_online_freei16qe.pdf
    • https://jufesuzukexo.weebly.com/uploads/1/3/5/2/135294717/fa8bbf24649.pdf
    • https://zaxalaxixu.weebly.com/uploads/1/3/1/6/131606365/8244274.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tuzivapevof.epizy.com/heart_failure_guidelines_2013.pdf
    • http://sugizujesel.epizy.com/76304481834.pdf
    • http://lagamifex.epizy.com/applying_angle_relationships_homework_2_answers.pdf
    • http://xapemekofutomun.rf.gd/wipeputinatewefufaxunevag.pdf
    • http://rawigukegopafot.onlinewebshop.net/list_of_all_warrior_cats_books_in_order.pdf
    • http://juxalabubifogis.rf.gd/50861353646.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000290b3.bin
ed9dc242a2daf98402705f0ddab21b53d6f34480d14ddbaa95c3415094d0bb00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x290B3 5568 bytes
font_01_sfnt_off0002a388.bin
93b7b2f1fef4c2a6b287b9faabd22aa7a92ee3a1672c71e9732fcf4da9bd32e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A388 15996 bytes
font_02_sfnt_off0002d302.bin
818e0b91ab355c49b905eee67a8750359621dd69a514533057b9447c7a4ad9bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D302 16180 bytes

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