Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1fd80680d27b6d…

MALICIOUS

PDF

74.9 KB Created: 2021-02-13 21:09:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2b53ee791b8744baf593f8aa4c03da44 SHA-1: 87d3b246345d7f460b190323e16867d976d42cbb SHA-256: ec1fd80680d27b6d0f19ea68addba15e3a154a8ad1902fb46f206eb3c8fc8ccf
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection by security tools suggest it's designed to redirect users to malicious content.

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/123?utm_term=mean+median+and+mode+worksheets+with+answer+key+pdf PDF link annotation
    • https://cdn.sqhk.co/balekunu/ha18BPb/leather_bomber_jacket_mens_black.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484636/normal_6003704f90dee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406809/normal_5fcf68fe8cc86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495974/normal_601d3028bd3c7.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/ajijoic/pajijud.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/jhjgia8/23127376533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_6014451f2a09a.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/jagfvgj/words_of_wonders_search_solution.pdfIn PDF document text
    • https://cdn.sqhk.co/zewezerezi/hhjaVXr/gowixawigutusa.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/gPihGib/jabavaguruxu.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/VijMnge/wood_crafts_store_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/mozedizupi/hjjd5he/lefobodojozogi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://welavosapo.rf.gd/camera_apps_2018_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/sekiga.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/vajiziwowose.pdfIn PDF document text
    • http://nitigij.rf.gd/jepafikudekobutatofasi.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_off0000e52e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52E 5512 bytes
SHA-256: a95f8738acc5795ef3c92de0f0e1067e643521df8f41c79834bec9027c9c9399
font_01_sfnt_off0000f7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E8 11592 bytes
SHA-256: 1752c2845116f1d003f525706c19ef57fdfdbd9936a4667a295d8671f4fb920a