Malicious PDF — malware analysis report

Static analysis result for SHA-256 23476d51b88054d8…

MALICIOUS

PDF

78.2 KB Created: 2021-03-14 17:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab3455b2cd5acc7077808873c2bf2e0c SHA-1: 7980b844a6dc62084677bf52a4fe57a9582a1b7e SHA-256: 23476d51b88054d878c3064a765e1b15a7f030d9b6b1ccdd82be84f935d92a05
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically indicating a phishing trojan. Heuristics identified an advance-fee scam lure, suggesting the document's content is designed to deceive users into fraudulent financial transactions. The embedded URL `https://nipisod.ru/123?utm_term=citation+report+in+wos` likely serves as a redirection point for the scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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://nipisod.ru/123?utm_term=citation+report+in+wos
    • https://cdn.sqhk.co/gunakawujo/aEKczml/adventure_landing_buffalo_new_york.pdf
    • https://cdn.sqhk.co/fevazufalul/hiqh8hi/university_of_alberta_holiday_calendar_2019.pdf
    • https://cdn.sqhk.co/kusewupudin/ecjebje/head_soccer_world_cup_2018_game.pdf
    • https://cdn.sqhk.co/sijiposago/gBgdghk/14581523858.pdf
    • http://j3vnci4.xyz/36244930599bvlqx.pdf
    • https://cdn.sqhk.co/zoxogatuv/jsjahiH/suzupix.pdf
    • https://cdn.sqhk.co/zimofuzam/ieZqJnS/muse_healthcare_maxwell.pdf
    • http://akillidestekbasvuruformu.online/test_psychotechnique_gratuit_a_imprimer_avec_corrig791id.pdf
    • https://cdn.sqhk.co/bemememu/igNjaha/duzazubedederetiwekile.pdf
    • https://cdn.sqhk.co/lamajemomu/urejcgi/zuxijigupofogutuv.pdf
    • https://cdn.sqhk.co/fagojefavap/skkqjae/don_t_touch_my_phone_muggle_iphone_wallpaper.pdf
    • http://piwulefimer.22web.org/lucky_jason_mraz_violin_sheet_music.pdf
    • https://cdn.sqhk.co/joxonorapa/hgihjfI/penguin_robot_car_game_robot_transforming_games.pdf
    • http://genusttwsr.fun/vumoduwujekogirulczj9e.pdf
    • https://cdn.sqhk.co/mujetujojen/fSgjja4/wujixalew.pdf
    • https://cdn.sqhk.co/gegefemorosu/gjiajjw/final_fantasy_viii_remake_walkthrough.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b6f5ef4d-96b2-489f-8fa1-5749a4ec5bad/20527670614.pdf
    • http://pasufok.rf.gd/wubokupamonuxolemiwan.pdf
    • http://fasilew.epizy.com/kibexuxet.pdf
    • http://sideganojasa.epizy.com/larokobatude.pdf
    • https://uploads.strikinglycdn.com/files/173a29f4-dcda-410b-a7ac-b88c5f83f135/sc_dmv_locations_open_on_saturday.pdf
    • https://uploads.strikinglycdn.com/files/b170ba9b-c1d4-4691-b8d3-46091951ca02/how_much_do_cyber_security_analysts_make.pdf
    • http://ladipuxot.rf.gd/communist_manifesto_book_pages.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1b8.bin
13146faa69662a6257edbcd7f90884b8ec1f8f9dab14b602e4e45e8f20c944cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B8 4780 bytes
font_01_sfnt_off00010212.bin
eaf6391005085d291cd38457f2dc86d449d255d7b9eb0c9911ddc98f884a628c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10212 12236 bytes

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