Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15fa9acfcb03f2b…

MALICIOUS

PDF

161.8 KB Created: 2021-04-10 09:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5a06101bbf7c2431d1177aba4d496337 SHA-1: 11852d57e3980658b035584b6d466a00d05080d9 SHA-256: f15fa9acfcb03f2b8facee0b5ee767e87996bc527013c309253697fa00d748b2
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/strik?utm_term=vishnu+sahasranamam+malayalam+pdf+free+download+hd PDF link annotation
    • http://nejamaranidirit.22web.org/business_report_structure.pdfIn PDF document text
    • http://edaruzal.xyz/25097930496sis7l.pdfIn PDF document text
    • http://raifaisentgo.online/chamberlain_security_garage_door_openeryq01b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a35aa970-3e4e-4c20-be1f-53d10001bce9.filesusr.com/ugd/af4e73_5e2b58b1fda24cf8b914552c6bd1d057.pdf?index=trueIn PDF document text
    • https://ad5375d1-0dc8-447d-a54b-f1659eeba1ba.filesusr.com/ugd/a4ba79_6705bad5f18e447e899c864421fc7a27.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pezofut/66012974519.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/45689521539.pdfIn PDF document text
    • https://3465328d-eb21-4af5-a94e-b8fdacefaafa.filesusr.com/ugd/c63bf9_f01148419925489fabc804d108d49caf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/papuja/what_battery_for_nixon_watch.pdfIn PDF document text
    • https://0f424234-9c27-4462-a606-4b2ccecf17d8.filesusr.com/ugd/b42a09_fc1dd4463da64c53b1f000762d6472d7.pdf?index=trueIn PDF document text
    • https://1b2c4efd-c8eb-4b04-b26f-b9154d704720.filesusr.com/ugd/d3758e_f03b725690034fb4b9eea385e7b186df.pdf?index=trueIn PDF document text
    • http://mipitevana.epizy.com/tuduzulowurivaranujud.pdfIn PDF document text
    • https://e4dd5bf8-bd13-43e3-b37b-9624b2564f03.filesusr.com/ugd/093416_27f9bc91f83f499e83cfaefc05468b8f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gogunabones/piano_concerto_no._20_mozart_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/hp_elitedesk_800_g4_sff_datasheet.pdfIn PDF document text
    • http://magonusu.epizy.com/mukirazevugav.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/17452915425.pdfIn PDF document text
    • https://786c536d-253b-4a15-94df-129c4693a223.filesusr.com/ugd/1fc311_b4d053d8394249269a3bd96735d8d664.pdf?index=trueIn 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_off00023bca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23BCA 5440 bytes
SHA-256: 2556f89e4b8bab89148c3eabccd6f671ca797654bca31bc1dd99711a4e1a308a
font_01_sfnt_off00024e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24E3D 12844 bytes
SHA-256: 9ef8e94a7608e836a5d81adf337d787527c52ac26d0323df48e6b9a26ea7d211

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