Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4bdbd43381067d…

MALICIOUS

PDF

93.8 KB Created: 2021-03-17 05:18:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5338d27300f781f3995d69e92a89546e SHA-1: 87fdbf13d5daf78f8495e683fbbde9ee9863b774 SHA-256: 9e4bdbd43381067dcdb82897a87b4afa26f0397c42f64689375039cf90df26ce
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 0.9994

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://ponafet.ru/wix?keyword=geometry+final+exam+pdf PDF link annotation
    • https://cdn.sqhk.co/sesijisova/gOjhhjz/98615811456.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/5j9P6hi/baitcaster_catfish_rod_and_reel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489032/normal_5fcd6dcca2447.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481990/normal_602964fb54ad3.pdfIn PDF document text
    • https://cdn.sqhk.co/govazilose/Jzgefhg/audio_pro_addon_c5a_wireless_multiroom_loudspeaker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377116/normal_5fded8f7d0fb8.pdfIn PDF document text
    • https://cdn.sqhk.co/kibukumivu/pTy8vDb/pipexigebupobuxozasolil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426690/normal_5fe438f119be0.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/OiAgejj/99555308894.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/ehhPD3l/clumsy_ninja_apk_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485710/normal_5fec5c5812721.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_602fc89e8f78a.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/flgcKih/duwabebifo.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/1pjgigS/lotazojutegelimub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482617/normal_604ff09537a0e.pdfIn PDF document text
    • https://cdn.sqhk.co/rovujesox/i4LU99S/musicians_friend_jackson_guitars.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/7Ygfnij/bike_unchained_2_mod_apk_rexdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488809/normal_604d2a845753e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_600db54a79f2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484375/normal_600299588fef9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476432/normal_5ff8872f83c0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487641/normal_5fda20ea4f6af.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00011b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B99 5208 bytes
SHA-256: 6794e3c6d36f43b2ba32384f2dcb59dd5b266b0eb3eeb824d9b0ad6fd212e98d
font_01_sfnt_off00012d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4D 11476 bytes
SHA-256: b13822f3699f7e1af09c736d91176bb9a9fe51195d6aeeb2f8cc53210105a8de
font_02_sfnt_off00015486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15486 16108 bytes
SHA-256: b502fd24b29156979d6c59f893acb7d2a65a7ab052f658cde64cc46a80b9144e

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