Malicious PDF — malware analysis report

Static analysis result for SHA-256 821ef3d9884cbf33…

MALICIOUS

PDF

74.3 KB Created: 2021-03-11 23:17:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8320452b3b7917246b9354453d06eb7f SHA-1: b2beaedd01bebed101db892ce1294e5789a63a58 SHA-256: 821ef3d9884cbf33690c35a7c842721f90510b459b4001c0e3456f1ef6af3c00
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=debt+snowball+spreadsheet+ramsey PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466664/normal_6048daefea7c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421462/normal_6032b9d48dc3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470020/normal_602a50a629813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_5fd81abbcdecd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_602e5a9e37fb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473403/normal_6040b790518ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485015/normal_60073f3498006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_6011977b17efe.pdfIn PDF document text
    • http://dabosesavedevet.medianewsonline.com/80963124574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_603ac0d1a1b04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383704/normal_5fde76eb03074.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/2012_hyundai_sonata_gls_tire_size.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/keloid_scar_silicone_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/system_verilog_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/cooking_with_dried_bean_curd_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/28833010290.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/fanip.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/final_fantasy_xv_ignis_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/61894865129.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FF 5532 bytes
SHA-256: a3dee1dced37a6ff425797c6cd6ba3f1ab2a2375fd57eef51744dd639758c116
font_01_sfnt_off0000f4b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B8 11592 bytes
SHA-256: 46df625600254802aebf0c5672454751e105110108f60068dea29ac55296c7ea

Open this report in the interactive analyzer, or submit your own file for analysis.