Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8b71a8a4b8b984…

MALICIOUS

PDF

73.0 KB Created: 2021-03-01 04:42:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 531ec79290095f0499f9008cc8b414b6 SHA-1: 3dd4b3231d8f982c19a5ca05278457d4541b03c5 SHA-256: 8e8b71a8a4b8b9848682a68590db5298c1a7fcb67127a75e93c067ddac7ac944
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that is likely part of a phishing or scam campaign, as indicated by the 'mobile legends cheats' keyword. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of an external URI and the nature of the content suggest it's designed to redirect the user to a malicious site, potentially for credential harvesting or malware delivery.

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://gimoguvi.ru/wix?keyword=mobile+legends+cheats PDF link annotation
    • http://vabodulesofife.22web.org/natekakopifuvasinof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455914/normal_6029f1855e066.pdfIn PDF document text
    • http://baliferifopiz.mypressonline.com/83497683469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446398/normal_5fd24753c48e6.pdfIn PDF document text
    • http://pubggaming.online/need_for_speed_rivals_ps4_multiplayeropxxj.pdfIn PDF document text
    • http://rolivazugatar.scienceontheweb.net/79061312520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_6038b3e0a6d30.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/rizezobabub/zosufonin.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/81603539642.pdfIn PDF document text
    • http://nixevafuzija.epizy.com/nutricion_enteral_y_parenteral_en_nios.pdfIn PDF document text
    • http://wizigipixe.atwebpages.com/99750489667.pdfIn PDF document text
    • http://gunubaxerilol.epizy.com/have_yourself_a_merry_little_christmas_karaoke.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/skype_7._36._150.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/tosolepubuza.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/how_will_the_new_moon_affect_libra.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/convert_in_to_word_document_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/piriformis_hurts_when_sitting.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/75583804111.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_off0000e389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE389 5252 bytes
SHA-256: ee9d9f48fa4dcd099722893dad4a232ede16c8ed0779065f44fce3de7648588e
font_01_sfnt_off0000f570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF570 9848 bytes
SHA-256: 646d4bd1279c5ddad2e68e3875adb448740621e6ae14def2e54990412d954d8c

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