Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ece4ee079e48a74…

MALICIOUS

PDF

70.7 KB Created: 2021-02-19 18:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 05ed6bd908681958705894c971366f57 SHA-1: c86e7e296c8ae2e74626feb24a8b4eb4d345d502 SHA-256: 3ece4ee079e48a74e01411e0fce8428ff073762ff69129122a5b2139dc7a5728
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized, suggesting a link farm or phishing attempt. The 'SE_INVOICE_LURE' heuristic indicates the document's content is designed to deceive users into clicking links, likely for malicious purposes. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious intent, possibly to download further payloads or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://druttle.ru/wb?keyword=what%20are%20the%20advantages%20and%20disadvantages%20of%20biomass%20power PDF link annotation
    • https://bulabameworiw.weebly.com/uploads/1/3/4/0/134096114/4205788.pdfIn PDF document text
    • https://cdn.sqhk.co/zowesifona/ighnwic/redegipodotezaxubarazow.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/inVjk8C/smashing_the_battle_cheat_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/dggjjjj/shareit_apk_for_pc_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/HibZgdt/real_racing_3_apk_soldi_infiniti_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/bobimugura/bic4bid/tiktok_stock_ipo_price.pdfIn PDF document text
    • https://cdn.sqhk.co/rifusofuwedi/yVhbdAc/download_music_mp3_free_english.pdfIn PDF document text
    • https://butijewib.weebly.com/uploads/1/3/4/8/134886415/silinebaf.pdfIn PDF document text
    • http://ravujonawugip.22web.org/61840998153.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/jhehbGq/positional_vertigo_icd_10.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/jinotugiwomo/potowuxopikutim.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/fosegajatad.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/production_process_of_portland_cement.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/how_to_write_bytearrayoutputstream_into_file.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/56710358971.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/75026164540.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/internet_speed_meter_app_for_android.pdfIn PDF document text
    • http://vusomafolu.rf.gd/desukozebafesowusorokoje.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/information_architecture_report_template.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD595 5728 bytes
SHA-256: 0e748e870af2fa78df085473656e8e6bce12a9e923057c11fc89646fdd9fa2c8
font_01_sfnt_off0000e901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE901 10676 bytes
SHA-256: ac9e57b40e541831a817228dbd1b7362ad5012abd8844e495907ee2d802930e1

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