Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e47c5544289e32…

MALICIOUS

PDF

81.1 KB Created: 2021-04-03 22:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1acb9b21e38b0abc177f66f5510e3db2 SHA-1: 23116c19fb00519f592fcd4ee3b7f46cd3a485ad SHA-256: 62e47c5544289e324f8c62ef54a0711a164c54f76de4497a5e77e963f66df440
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary function appears to be redirecting the user to a potentially harmful website, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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/award?keyword=dibujos+de+spiderman+para+colorear+pdf In PDF document text
    • https://cdn.sqhk.co/lanuniwa/iex1ijJ/word_calm_level_941.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/jbaVgpV/dorema.pdfIn PDF document text
    • http://xolidila.iblogger.org/biocentric_egalitarianism_paul_taylor.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/ujcibji/most_wanted_mod_apk_free_download.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/robigowobez.pdfIn PDF document text
    • http://gupilan.iblogger.org/lidadivedobaluxuxoru.pdfIn PDF document text
    • https://cdn.sqhk.co/nulegudup/iUiehhn/tinkle_magazine_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://terumalok.atwebpages.com/sajiza.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/toronto_fun_guide_scarborough.pdfIn PDF document text
    • http://kesurodijafezup.rf.gd/metro_map_taipei.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/domukozejitexogekij.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/dubobasagariwapigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0d780ce-c8cb-4a72-960c-8b131da376a1/top_selling_wood_projects.pdfIn PDF document text
    • http://najexenij.onlinewebshop.net/gogigatesu.pdfIn PDF document text
    • http://pimoretisew.epizy.com/7315756624.pdfIn PDF document text
    • http://momerulazem.rf.gd/technical_guidelines_for_digitizing_archival_materials.pdfIn PDF document text
    • http://moborudazijom.epizy.com/australia_visa_application_form_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/bologoxebiretodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa82650-a456-4f6d-8918-a969cfbf4fb7/dazufogowudaxekapibu.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/86265650015.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A0 5516 bytes
SHA-256: 8d65d3c5a703754ea94c37992f398c024f6fa2aadab30c900dc809e1928aeb77
font_01_sfnt_off0000fc49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC49 10448 bytes
SHA-256: 1df0d3c946d3e1db732cd99065af16ee0c6a8e5009cf83bbf37f5fc1a77b664a
font_02_sfnt_off00011eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EAA 16448 bytes
SHA-256: 4d0b7fceb6e0b8544dba10d314310d86ee7e0ac375a8e3b5fd915ca5fa71995c

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