Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf832025d500810a…

MALICIOUS

PDF

76.6 KB Created: 2021-02-28 09:50:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6c582665441c1915c97ddf474b77079a SHA-1: acdda1a63dbf1edc47906b4e9ad3ae9aab5436da SHA-256: bf832025d500810a0a680c9c331f1182d2ff331bb6ad6966e1b9f0bd98884ac8
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://kuzutuzo.ru/award?keyword=johnson+controls+a419+setup', suggesting a phishing lure related to an award or setup guide. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing campaign designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/award?keyword=johnson+controls+a419+setup PDF link annotation
    • http://bimiwefumukiv.22web.org/bluebeam_revu_standard_free.pdfIn PDF document text
    • https://nodokesomizi.weebly.com/uploads/1/3/4/6/134656280/fuxazivip_nujirobuwali.pdfIn PDF document text
    • https://muzuxagofonokow.weebly.com/uploads/1/3/1/4/131406885/kefiluvosafivedate.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/Vqd8rMt/64506914486.pdfIn PDF document text
    • http://lezozopose.iblogger.org/55002136069.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/2iTCz1p/monster_hunter_world_mods_xbox.pdfIn PDF document text
    • https://katinena.weebly.com/uploads/1/3/1/3/131383377/mafetexiputane_bukafiratedov_wofomukulazibi_bejumimevotaga.pdfIn PDF document text
    • https://gexokatex.weebly.com/uploads/1/3/5/9/135960098/raxilek_kasivifusevad_vodetaro_punigupo.pdfIn PDF document text
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/a1a465.pdfIn PDF document text
    • https://cdn.sqhk.co/bowevuva/khejhhj/81276109225.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/iiifG7o/55065881099.pdfIn PDF document text
    • http://pelobana.66ghz.com/aptoide_apk_indir_pc.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/27555321782.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/dugibojeduxevo.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/monster_hunter_switch_axe_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/70055390197.pdfIn PDF document text
    • http://jomozaredid.rf.gd/calcium_hypochlorite_tablets_safety_data_sheet.pdfIn PDF document text
    • http://mawokale.myartsonline.com/organic_chemistry_1_final_exam_practice.pdfIn PDF document text
    • http://nukuluduresuju.rf.gd/sports_illustrated_swimsuit_first_plus_size_model.pdfIn PDF document text
    • http://pivutabomenatam.rf.gd/ad_blocker_pro_apk_latest.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F7 1644 bytes
SHA-256: b740fb5772f30033a20b64cac589e5f3d4272b57f5e72ea652a39b6fd94a8056
font_01_sfnt_off0000ee2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2D 5308 bytes
SHA-256: c91aee3dbf460a28e38cf1f11766772453f81d02e5e239ec950259b8dfab5c78
font_02_sfnt_off0001003a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003A 10768 bytes
SHA-256: f8f5734630c88ba3c721f1d8489652f6799491728e83f60ee5b9e92e16ca1861

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