Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be78a452658ad30…

MALICIOUS

PDF

74.3 KB Created: 2021-02-21 03:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d9d58926a81acce4ff6613c3d628a57b SHA-1: 59bd151517a32a03f63d08616bf6eb39c3382cb3 SHA-256: 9be78a452658ad30e60039cb3d0ec1095757f817fac2146783bd6231707e5c23
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL that appears to be part of a phishing or malware distribution scheme. The document body, though partially corrupted, suggests a lure related to a technical problem with an iPad keyboard, aiming to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=what+to+do+if+ipad+keyboard+doesn%2527t+work PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386086/normal_601b30b7ad500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501208/normal_600bc5dfcd277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421336/normal_602678e52abba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416332/normal_6025a48bae966.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_601005508864d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424013/normal_5fe935a43001e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469103/normal_600efb34ccc19.pdfIn PDF document text
    • http://gutafagiwoja.iblogger.org/38654449664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379611/normal_5fd7c33d7de15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469126/normal_5fe11a6792f62.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jobavo/bahubali_movie_tamilyogi.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/bureposonakunovek.pdfIn PDF document text
    • http://minifuduredejo.rf.gd/burger_king_coupons_mydealz.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/gibbed_mass_effect_3_save_editor_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/17147052448.pdfIn PDF document text
    • http://winupenelipumo.epizy.com/55179281765.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/cucumber_js_output_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 5332 bytes
SHA-256: e087dd826122edc65d9fb17d85185a2f18ca24fe4360c5fba54c8d70b10294c8
font_01_sfnt_off0000e9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B3 10632 bytes
SHA-256: 42585437f93b78ed68ce6c40a7d4afc8b06b5b4549717c980d54d4424319f013
font_02_sfnt_off00010df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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