Malicious PDF — malware analysis report

Static analysis result for SHA-256 df738c7bb8a1ea6c…

MALICIOUS

PDF

78.2 KB Created: 2021-03-22 04:23:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74c17f49852a70992a7bb1a60db3978c SHA-1: f24e281a949f12c7482ed433bc4b42d18827486d SHA-256: df738c7bb8a1ea6c05a7072c229c4776ad84b412c9f49799a1b79b19475a9fa0
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://lozipotod.ru/123?utm_term=rust+blue+keycard+guide', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a 'Rust blue keycard guide'. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections strongly suggest a phishing or malware distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lozipotod.ru/123?utm_term=rust+blue+keycard+guide
    • http://nafarami.medianewsonline.com/unqualified_steven_furtick_book.pdf
    • http://pozijuza.scienceontheweb.net/orion_cooker_times_turkey.pdf
    • https://cdn.sqhk.co/vipabure/QkfgfTW/vivuzoruboxorapilegova.pdf
    • http://xazupadapafow.mypressonline.com/portrait_drawing_tutorial.pdf
    • https://static.s123-cdn-static.com/uploads/4476938/normal_5feba5337032c.pdf
    • https://cdn-cms.f-static.net/uploads/4458833/normal_6012ce5906068.pdf
    • http://duwinijuj.mypressonline.com/all_in_the_family_theme_song_sheet_music.pdf
    • https://cdn-cms.f-static.net/uploads/4403141/normal_600fb99843d22.pdf
    • https://cdn.sqhk.co/todusukiraxi/l2khgge/good_for_you_podcast_benton.pdf
    • https://cdn.sqhk.co/toromerepowa/VjgVhfc/94878923583.pdf
    • http://bagedejatobino.22web.org/57250786822.pdf
    • https://cdn.sqhk.co/titabofasika/ifhbgh5/mobile_browser_address_bar_bottom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/medaliwifufugel/74009301381.pdf
    • http://wuvafox.epizy.com/gafetizig.pdf
    • https://s3.amazonaws.com/ninasivol/2020_good_sam_dinghy_towing_guide.pdf
    • http://pelasezota.rf.gd/15282129141.pdf
    • http://pabudixobo.epizy.com/hungarian_sonata_piano_sheet_music.pdf
    • https://s3.amazonaws.com/fizup/importancia_de_los_titulos_de_credito_en_mexico.pdf
    • http://bidajalej.onlinewebshop.net/ikea_catalog_2020_free_download.pdf
    • https://s3.amazonaws.com/kuboki/30029865208.pdf
    • http://kalotiwinilobiw.epizy.com/lukazunekarafamozov.pdf
    • http://tetizawoto.rf.gd/8608220448.pdf
    • https://s3.amazonaws.com/gotenukevepunin/dewalt_735_planer_belt.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f36d.bin
f1d74f47118309c43c13697e9c477bb8940ea4fc526bf1b3c52306425c15c709		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF36D 5420 bytes
font_01_sfnt_off000105f8.bin
fbfca548c4ec4e1db9d9a05c5790dc50f65f78473f429af132cf5f08a2e47707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105F8 10436 bytes

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