Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2513a9f0c2379a…

MALICIOUS

PDF

79.0 KB Created: 2021-03-03 09:08:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 84fc1f6a970d518c92ebb43459ef5906 SHA-1: bdf0929b04bf1a6475d2c7ab566ccb3c2aac99e7 SHA-256: 8e2513a9f0c2379a192b8ec2fc086b5674799733c7cd5097f874ff73eeb4f50e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further support this, flagging the file as malicious. The presence of an external URI suggests the document is designed to redirect the user to a site that may host further malicious content or phishing pages.

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://dugedepap.ru/wix?keyword=mean+absolute+deviation+maze+worksheet+with+answers PDF link annotation
    • http://talakam.space/aglycone_form_of_genisteinns74v.pdfIn PDF document text
    • https://xugilatopuke.weebly.com/uploads/1/3/4/7/134746985/nuginop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387807/normal_60359c8332910.pdfIn PDF document text
    • http://fosipuzo.mypressonline.com/is_it_safe_to_turn_a_propane_tank_upside_down.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_5fc6cf8b54d18.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zifofupox.rf.gd/how_many_calories_are_in_a_sonic_pretzel.pdfIn PDF document text
    • http://limazajot.rf.gd/samsung_android_phone_codes_and_tricks.pdfIn PDF document text
    • http://dinikuwaduvo.epizy.com/62867993930.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/71583512516.pdfIn PDF document text
    • http://zorikeroz.onlinewebshop.net/sig_p238_legion_review.pdfIn PDF document text
    • http://ravigokabuf.rf.gd/33499645723.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/cambridge_english_pet_exam.pdfIn PDF document text
    • http://redifigikutusoj.myartsonline.com/vitamix_a3500_black_friday_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/79645577167.pdfIn PDF document text
    • http://kulebosux.myartsonline.com/cant_help_falling_in_love_ukulele_easy_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/jirabilepezekudaf.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_off0000f98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98E 5476 bytes
SHA-256: 5313837f340c8a9d00ef9574c302298752f2ae4a89573a4eec645352115ce8a2
font_01_sfnt_off00010c24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C24 10076 bytes
SHA-256: acb749e979441cff297f3c550053ce17d0f60dab77637767bc48924abfeabe5c