Malicious PDF — malware analysis report

Static analysis result for SHA-256 2afdf9e233bead77…

MALICIOUS

PDF

89.2 KB Created: 2021-04-17 04:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 08d1d611ee4ee1df1e53345815c71b4b SHA-1: 78488fff125efa1f410eb80e7e9fd2c8efa267ed SHA-256: 2afdf9e233bead77e6c8fdc75e0bd8b48a93dafac39c21763dd9d2a0cf6410ef
96 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for an external URI, pointing to a suspicious domain. The document body, though heavily obfuscated, appears to be a lure related to sports. The primary IOC is the external URL, which is likely used to host a malicious payload or phishing page.

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/strik?utm_term=how+to+be+a+good+outside+linebacker PDF link annotation
    • https://cdn.sqhk.co/daxerarugak/efBgh4l/puzzle_and_dragons_x_episode_15_english_dub.pdfIn PDF document text
    • https://cdn.sqhk.co/lovaxixifew/SXdjhTI/hay_fever_word_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/chgEhfa/74208738182.pdfIn PDF document text
    • http://sitajejo.22web.org/active_directory_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/cCljiif/80468271496.pdfIn PDF document text
    • https://cdn.sqhk.co/belesobikezi/c67NFje/w3schools_javascript_function_parameters.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3978232f-f4f3-4deb-a48c-e882840ce6cb/99414447987.pdfIn PDF document text
    • http://semekumuxolat.rf.gd/counterfeit_goods_act.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e5f7343-b3ed-4a29-8a7b-70958a7c98b2/71679324272.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/19276837020.pdfIn PDF document text
    • http://nuxetivepi.rf.gd/krups_rice_cooker_fdh112_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4227b066-937d-40c1-98be-11b309b482d9/rupimovorizisuniri.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/remobi.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/gulebox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19c3b4b0-28a4-4252-83e4-b37c8e1902ce/19070581022.pdfIn PDF document text
    • http://vajavilodufolix.epizy.com/camtasia_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48b69af4-a28a-47d1-8958-e1fc7c2b1796/67426096841.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/16419545827.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/gabol.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/tardive_dyskinesia_treatment_guidelines_uk.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_off00011f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F0E 5364 bytes
SHA-256: 76317af10b61a0dad0f8e16f8ba334ae52a828dbe0d1b3938710ac1a7c3eec77
font_01_sfnt_off0001316a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1316A 11312 bytes
SHA-256: 571b39153f547ddcb4e85160e0d70d740c31949fc9f0b4936c70c4bb1bd5cdab

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