Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d1c92d3b9aabcd…

MALICIOUS

PDF

336.1 KB Created: 2021-04-05 12:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 222921432cdc93ac1244e32a7c8d1827 SHA-1: 55a6ee595adcfc20e2441da67afaaa0a1e4ae2ca SHA-256: e3d1c92d3b9aabcd3ba2dddad5b3ad24719fb9198e0c0d2a406f7de2f66f428a
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9233

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://xajibur.ru/award?keyword=biology+notes+form+1+4+pdf+download PDF link annotation
    • https://cdn.sqhk.co/kupuruvew/iiZ5iaw/porifibabawanofisot.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • https://jozisanolotodix.weebly.com/uploads/1/3/0/9/130969335/jomuxajada-finosatupume.pdfIn PDF document text
    • https://cdn.sqhk.co/matapolid/kghfPVK/texto_para_cerimonial_de_baile_de_formatura.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/jgjv7LO/53479821842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450514/normal_5fe6b90412569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453889/normal_60174a4681a3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501037/normal_5ffbdf80f12e1.pdfIn PDF document text
    • http://keysecret.ru/shimano_ultegra_di2_r8050_manualw7k3j.pdfIn PDF document text
    • https://xejapekedom.weebly.com/uploads/1/3/4/8/134864907/nopaki-giliwinerisu-gonirukekaxixu.pdfIn PDF document text
    • https://cdn.sqhk.co/pomiwuximu/4Qjgxgi/galaxy_siege_2_walkthrough.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa9e294-9f96-4bc2-bce8-788d03121268/the_production_of_space_lefebvre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d252a764-21c2-4489-806f-59cc905bfedd/96522193435.pdfIn PDF document text
    • http://zugejono.epizy.com/tewosemufageka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddea3f3e-0cba-4bb7-bc13-4f8b038ec700/complementary_supplementary_vertical_and_adjacent_angles_worksheet.pdfIn PDF document text
    • http://rezopaduj.epizy.com/18542532110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0dbd12-0dc6-438e-a6a6-f93e0f86b234/john_deere_60_inch_mower_deck_belt_routing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce8b94ab-7b3f-41cf-9bca-b69f1dfd1e98/dowadowukinefipujunofe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004db3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB3D 5744 bytes
SHA-256: 0dc7bc06eee56611968d7534856802520f3e5de86492fcc78020269838e8241b
font_01_sfnt_off0004eeeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EEEB 12160 bytes
SHA-256: 53146457b76a0ee346878b31ccdcebf0b2ddfd8a25736bc3cb1533ed28ccb560
font_02_sfnt_off00051895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51895 16324 bytes
SHA-256: eaf74eefd651e960b44bc59519d73026a4482428d5b1c76449b84fc086f2ee53

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