Malicious PDF — malware analysis report

Static analysis result for SHA-256 46271aae67b797fc…

MALICIOUS

PDF

90.1 KB Created: 2021-03-31 18:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05a7871ac43e7b31ef1e8edadc274266 SHA-1: b706680008b51e645ac302fad8d60e90ce04c59b SHA-256: 46271aae67b797fc363576c398a44329afc5cb9100116f8fd60c89d8b632b543
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this assessment, flagging the file as malicious. The document's content, though heavily obfuscated, appears to be a lure to direct the user to external resources, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://resalured.ru/123?utm_term=practical+lessons+in+endodontic+treatment+pdf
    • https://muwewixobajigu.weebly.com/uploads/1/3/4/3/134312624/2128158.pdf
    • https://cdn.sqhk.co/xezufulozuwo/jA6jijg/91258007963.pdf
    • https://kezexawu.weebly.com/uploads/1/3/0/8/130814062/553563.pdf
    • https://pusesame.weebly.com/uploads/1/3/4/6/134662227/4815570.pdf
    • https://cdn-cms.f-static.net/uploads/4457320/normal_60333c44a30ee.pdf
    • http://tonedomopoja.scienceontheweb.net/alkanes_iit_jee_questions.pdf
    • https://cdn-cms.f-static.net/uploads/4488092/normal_6061b00d4a240.pdf
    • https://lufalejovi.weebly.com/uploads/1/3/1/3/131380058/buvafi.pdf
    • http://nikaold.site/46614368351h0f63.pdf
    • https://cdn.sqhk.co/xurakipigub/Thjgdpa/itopya_guvenilir_mi_technopat.pdf
    • https://cdn.sqhk.co/jemitaso/jewjijj/stuntman_mike_car_in_death_proof.pdf
    • http://xelowonol.scienceontheweb.net/digital_electronics_multiple_choice_questions_with_answers_download.pdf
    • http://septiki-rf.website/nomifopasutavapqta.pdf
    • https://static.s123-cdn-static.com/uploads/4384461/normal_60047c4156243.pdf
    • http://mebevevi.mywebcommunity.org/cuando_accent_mark.pdf
    • http://creditscoreusa.info/qual_titulo_de_credito__necessariamente_causalzkhpx.pdf
    • http://qrastenmap.online/ranowusejuboxagiu51r6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nisiwanolom/tesasapelekobekemolanuzo.pdf
    • http://lufiwivumijej.myartsonline.com/characteristics_of_service_marketing.pdf
    • https://s3.amazonaws.com/muwemivumazulax/intermatic_digital_timer_dt620cl.pdf
    • https://s3.amazonaws.com/fekife/iowa_mandatory_reporter.pdf
    • https://s3.amazonaws.com/domegagowevag/fixumedupexukukilijesa.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00012bee.bin
1dead0fdbcc53fd3c1d3d1f1be0f058859015da514950acb548d5a2bfe3c53ec		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12BEE 26316 bytes
font_00_sfnt_off0000f25e.bin
d680323db0eb977adfaba149cd9f5a2457e4297c12c7c59408532442c33e4805		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF25E 5300 bytes
font_01_sfnt_off0001044b.bin
1d5ef9139f3086196c0b45c09ecd3fa154f6f79ad0d91667e0386687cd4aa774		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1044B 11720 bytes

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