Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d07a50a1205ada4…

MALICIOUS

PDF

75.7 KB Created: 2021-02-28 06:09:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 840147a6671cc6684980aad8aadc86e9 SHA-1: 2c9608975913a3702c3d3e3c2927d6a55ff1c690 SHA-256: 7d07a50a1205ada4c01c3a298daf36dd7f1287a2b0994bdec8b055500402c27a
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, suggests a technical or academic context, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://dugedepap.ru/aws?utm_term=determine+the+reactions+at+a+and+b+for+the+beam+loaded+as+shown
    • https://static.s123-cdn-static.com/uploads/4459036/normal_5ffe84c6422bc.pdf
    • http://bisibometixo.mywebcommunity.org/duzikisa.pdf
    • http://sifamukuji.iblogger.org/material_safety_data_sheet_hcl_msds.pdf
    • http://roxedizusugu.mywebcommunity.org/85783794538.pdf
    • http://bagesopabiwub.scienceontheweb.net/how_to_find_panasonic_tv_code.pdf
    • https://cdn.sqhk.co/sobupepokor/dhahfel/mx_player_free_download_uptodown.pdf
    • http://tevfikyuce.xyz/vebetoreduvomekowibigqzx5.pdf
    • http://ridegibulas.22web.org/star_wars_rpg_races_and_classes.pdf
    • http://usersonlineguardingsettings.site/73433474688ml8r0.pdf
    • https://static.s123-cdn-static.com/uploads/4371783/normal_5fed10d3ac4f1.pdf
    • http://detonic-italy.website/how_to_change_tension_on_brother_pe800xkcsl.pdf
    • https://static.s123-cdn-static.com/uploads/4462352/normal_5fff4cac0b27b.pdf
    • http://usesalon.xyz/kuroxolirogonukujexor4k5d.pdf
    • https://cdn-cms.f-static.net/uploads/4367294/normal_6022245f1b9e8.pdf
    • http://znasila.ru/81620518975tt47o.pdf
    • http://8gusevshop.website/160544094346qyu7.pdf
    • http://prosucre.pro/50649493813m6bd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fozujapajus.epizy.com/73876939154.pdf
    • http://rebobimakefeli.epizy.com/73261222864.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d353.bin
fcffa9ca551a329bfd72f4ac03e343433b0ed3d3429af01ab458c1010911f628
pdf-font-stream PDF embedded font (sfnt) at offset 0xD353 5492 bytes
font_01_sfnt_off0000e5e8.bin
fab20cd3ffe9b2ca17cd8a5c36d51460a1331f59809b1f0907094dd6f3158ff6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E8 10964 bytes
font_02_sfnt_off00010b4f.bin
584780b83d2b471c60ad56403b6c1b1ffad8e928be7c9b74e809276eb4de34d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4F 16152 bytes