Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b1b06197ebf91e…

MALICIOUS

PDF

70.6 KB Created: 2021-02-16 08:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: cf44dc52f47e1e77f77b8b9c8662ed32 SHA-1: 56e21ad458dde624526ac98c081c3bb30bab13b1 SHA-256: f4b1b06197ebf91e435e70f841265ad0d1cca5cda8209de7082bd7b0a1981d3a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL that directs users to a suspicious domain, likely for further exploitation. The document body, though obfuscated, appears to be a lure related to insurance searches, suggesting a targeted phishing attempt.

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://bologen.ru/wix?keyword=a+affordable+insurance+brockton+massachusetts PDF link annotation
    • http://naturaleone.space/shivaay_hd_video_songja981.pdfIn PDF document text
    • http://shothard.site/fetal_growth_and_developmenthro56.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/dQjjhbn/bovuriwekewezidotoro.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/ibYQhBl/wikel.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/hdj7TKY/football_freddy_funko.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/ihpgo9s/jigawisiderenijitobuk.pdfIn PDF document text
    • http://xojudesabesone.66ghz.com/triceps_pushdown_form.pdfIn PDF document text
    • https://cdn.sqhk.co/gedofovel/dhhjbgg/princess_cake_cooking_video.pdfIn PDF document text
    • https://cdn.sqhk.co/rabovafom/wjjjghb/rocket_launch_schedule_vandenberg.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/djegihj/lemefoka.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/swu7ic5/electric_bbq_grills_at_lowes.pdfIn PDF document text
    • https://cdn.sqhk.co/safubuguva/hchcOjb/16982718497.pdfIn PDF document text
    • https://cdn.sqhk.co/wujodazera/Wicjhia/cbse_class_9_maths_book_2020-_21.pdfIn PDF document text
    • http://lifeeuro.info/website_icon_freez0zpz.pdfIn PDF document text
    • https://cdn.sqhk.co/zupisopad/jagdkjj/pew_pew_madafakas_cat_meaning.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/zagapaxa/bakumanudajem.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/cerrar_cuenta_de_facebook_desde_android.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/fakofoxusojoputelixevu.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/47791086997.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_off0000c9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B0 5336 bytes
SHA-256: f243dd91b7e2c3a41130270adc2b9e50ae0ef2e1928635bf8eb369aa59887941
font_01_sfnt_off0000dba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA5 10116 bytes
SHA-256: d1a118871361b26f39aede3c7637dfa78cdc14e6cacefad7e34df4ae39748589
font_02_sfnt_off0000fe43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE43 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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