Malicious PDF — malware analysis report

Static analysis result for SHA-256 00bbd3ccac8b1f33…

MALICIOUS

PDF

74.1 KB Created: 2021-02-23 22:11:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 52d9b127461d265e6b87e50d9a44340c SHA-1: cd9b1ab1f8f6d9b6800245008f9e13adf409448e SHA-256: 00bbd3ccac8b1f336a383ac4fc7b5bd59332d06699016af12d8edb402dc2e293
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link that redirects to malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to be a lure for downloading a movie, aligning with phishing tactics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the exploitation of a PDF vulnerability to execute a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/strik?utm_term=me+before+you+full+movie+download+hd+popcorn In PDF document text
    • http://topmassage.net/83679251042pwkus.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/eMjhjgN/malayalam_funny_lock_screen_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/jhgjhic/56036604396.pdfIn PDF document text
    • https://cdn.sqhk.co/xataruzepape/jhsjahi/learn_english_vocabulary_words_offline_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nujizeres/ajaa7fB/hacker_murderer_online.pdfIn PDF document text
    • http://baranaydin.org/asturias_guitar_sheetayqb5.pdfIn PDF document text
    • https://cdn.sqhk.co/busunava/g9digfq/interior_design_ideas_brown_leather_sofa.pdfIn PDF document text
    • https://cdn.sqhk.co/zifuvifiweva/fsiejc2/how_to_cut_a_sheet_cake_into_layers.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/aihwdic/splendor_in_the_grass_movie_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/pozedezupase/hjdwic5/muxewe.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/Y7wheZJ/59993388520.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzededoz/z6jhjjW/spanish_learn_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/0gfbehe/talking_ginger_2_download.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/kavugusepe/karmasangsthan_bengali_news_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/52692889344.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/online_english_grammar_checker_tool_free.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_off0000d602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD602 5416 bytes
SHA-256: 545c4b1bf7e6fdb42b1463547f182b40c145366a6ac8d22e73eaf2b146c76f15
font_01_sfnt_off0000e850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE850 10840 bytes
SHA-256: 3aafdae380774decdc2aefebdf7897966feefada392920007a56252143f09116
font_02_sfnt_off00010d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D48 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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