Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef7320311ef89bab…

MALICIOUS

PDF

67.6 KB Created: 2020-12-23 19:40:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6924e1817bdd60b1eda095956a48599f SHA-1: ab1fb1e442ded606646be2df92b3768541593dff SHA-256: ef7320311ef89babb693a6c20bfe7b1d11622564762edf6ecc99e8b7f214e7cd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://traffnew.ru/aws?utm_term=agri-+fab+45-+0492+manual PDF link annotation
    • https://sivisobimiji.weebly.com/uploads/1/3/4/7/134754783/6408575.pdfIn PDF document text
    • https://buvitefano.weebly.com/uploads/1/3/4/1/134131500/1923766.pdfIn PDF document text
    • https://cdn.sqhk.co/linerutinew/hgjaie8/dukifefijutevefu.pdfIn PDF document text
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/wubifinileg.pdfIn PDF document text
    • https://cdn.sqhk.co/xaderimi/bpIjjgi/32300863115.pdfIn PDF document text
    • https://cdn.sqhk.co/fakupavod/RJuWq6G/rapanafenile.pdfIn PDF document text
    • https://fusonunobowur.weebly.com/uploads/1/3/0/8/130813531/nijenigin_tejel.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/jokotaziweluge/pomisoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28bdae40-3652-4e5a-88ef-9cdfe9979f5b/change_lock_screen_password_android.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA92E 3156 bytes
SHA-256: 6f94e1b647c438f2760c77bd88881d3a2caf3342b468963c9f4e4c83734c32c0
font_01_sfnt_off0000b46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB46F 5712 bytes
SHA-256: a6a06c4ee4c5b96944f93509aa42770d6e7b34f0159f1b9c60e950f34f060234
font_02_sfnt_off0000c7e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E0 10652 bytes
SHA-256: def1dbb3462a20cec2ef43e9ae24c04fcfc86a4e9b3dea035017d26bd029639b
font_03_sfnt_off0000eba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA6 16196 bytes
SHA-256: 7279e17af1e02fd0f3ef997930705907ffabfba99e9efaabfaf00d6d06097595

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