Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdd0781d1707b1f…

MALICIOUS

PDF

71.8 KB Created: 2021-02-21 21:36:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ec4d0d03ec71cc3e9b06165239f6f4f7 SHA-1: e678024eb1f8a396322e01fd6228940d061f1add SHA-256: dbdd0781d1707b1f6133fb9f74788bdbb5abab4d13ca5ec70fde50ff746b1627
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The embedded URL points to a domain associated with phishing keywords. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=penalty+for+violation+of+ccpa PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4496585/normal_5fd12dfd1e2c3.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/cGmyO7y/kelusorewera.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/0jjifgc/94174576708.pdfIn PDF document text
    • http://cparta.moscow/algebra_1a_slope_intercept_form_worksheetelclt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391331/normal_6017061129fbd.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/ctidWif/ruzaxaratarakupef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427783/normal_6001e88642d07.pdfIn PDF document text
    • https://cdn.sqhk.co/vixuzemabad/RxhbeUW/74840643601.pdfIn PDF document text
    • https://cdn.sqhk.co/vifutetax/fl9ihLQ/77064391702.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412768/normal_5fcd706eacae3.pdfIn PDF document text
    • https://cdn.sqhk.co/tosilura/fcVXIid/48695958320.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/a7ictie/screen_recorder_apk_download_for_android_4._2.pdfIn PDF document text
    • https://cdn.sqhk.co/depadukat/6jbsial/tip_top_tux_sioux_city_hours.pdfIn PDF document text
    • http://spainsale.pro/noticias_telemundo_52_californialbt5q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoradodi.epizy.com/rnb_instrumental_beats.pdfIn PDF document text
    • http://nomekerileme.epizy.com/37087557818.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_off0000dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE7 4996 bytes
SHA-256: 743d3018d3c77e58d266510e7550626846b54dd84b29c39a1d35c044abf2a3c6
font_01_sfnt_off0000ef0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0B 10228 bytes
SHA-256: 2ee1227a7112dce4d41087117bdad858342d5cbd448f3acc60f7781a2fb76724