Malicious PDF — malware analysis report

Static analysis result for SHA-256 9491c2748fc19316…

MALICIOUS

PDF

70.9 KB Created: 2021-02-11 11:11:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a016d11a9c04429b26b93ba874e81020 SHA-1: 7c8f99a18452effd3dfe877cfd98857edb993bb1 SHA-256: 9491c2748fc19316ea0e3a472392e1540585fb25c36606c93329d91b5248342e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URIs pointing to external websites, suggesting a phishing or credential harvesting attempt. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/aws?utm_term=akai+professional+apc40+mkii+manual PDF link annotation
    • https://cdn.sqhk.co/moxinivo/Oo7hbgg/zowuzoxibap.pdfIn PDF document text
    • http://xexejidabame.22web.org/anne_marie_friends_320kbps.pdfIn PDF document text
    • http://design-kvartira.info/beyblade_burst_mod_apk_all_beybladeslqrq7.pdfIn PDF document text
    • http://obzorov.site/petumopuduw4gnv5.pdfIn PDF document text
    • https://cdn.sqhk.co/zanemulazif/hccjdih/zajexi.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/Qhhieg4/sadonoboronuvubuvaw.pdfIn PDF document text
    • http://tovarzone.ru/15863501394y9g95.pdfIn PDF document text
    • http://genokoti.iblogger.org/characteristics_of_non_governmental_organizations.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lakadutof/tevakod.pdfIn PDF document text
    • http://deroselewem.epizy.com/apa_style_guide_headings.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/free_printable_spanish_present_progressive_worksheets.pdfIn PDF document text
    • http://nanesipub.rf.gd/inverse_proportion_worksheet_tes.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/64693462979.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/runaxovuxo.pdfIn PDF document text
    • http://gulibekesewek.epizy.com/69678317140.pdfIn PDF document text
    • http://gujalitez.epizy.com/jaxabikazebefekekuzesero.pdfIn PDF document text
    • http://mefowoweman.epizy.com/certificate_of_completion_sample_format.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DE 5444 bytes
SHA-256: 258b661b7fd4a73cfcb4434d2aa6f9f9ef88aceedfcc3e4d76e7d7792e616197
font_01_sfnt_off0000eb5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5C 10340 bytes
SHA-256: 50f00fa7742d10b13580c348e8c8313ada4003329b10cad400b3152bd5bbd75b

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