Malicious PDF — malware analysis report

Static analysis result for SHA-256 98969348f712b380…

MALICIOUS

PDF

120.5 KB Created: 2020-11-26 23:37:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 67b7103d0b68078d5914279c3bf7a0ee SHA-1: 6e57e6ef2ee6adaf1996a56719831306641313c2 SHA-256: 98969348f712b3800bf2d39802afb23f97f35d672c4d37462736dd543bf06bb4
162 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 routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/aws?utm_term=m16+bolt+cad In PDF document text
    • https://cdn-cms.f-static.net/uploads/4490140/normal_5fad905dce905.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a53cc73-66b2-477d-832a-641517abb5ea/bdo_highest_level.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc5c5b31-0349-46dc-9be9-8e1a893cab06/21736868264.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02e1aae0-12b8-4f4d-854c-9e958358e79c/64756920027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3128b41-ca6b-4cf7-8861-b287b01463bf/kufexipesozofari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b73f044-4889-4e74-84f1-966ec8d4b506/how_to_use_jolen_creme_bleach.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c56291-214a-440a-b69e-2d645ee1b086/michael_vey_7_the_final_spark.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/pabot.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/91728284046.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/arduino_uno_ide_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89cbb092-f5ca-4304-bce0-c965d8c0046e/91413206748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86a20292-6f40-46f6-ba91-a323c785e19b/training_consultants_login_aspx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32f10a04-0216-413c-8448-8d49d4ca182c/wisuj.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off00016691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16691 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off00017776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17776 5008 bytes
SHA-256: 97ef185c28b31485fc38d7001802c9f3f2a925237179d348fefd0f112b2a8ed2
font_02_sfnt_off0001889f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1889F 17300 bytes
SHA-256: 13e5a26c41203d932261be133a14589c23d1ba274ab42e9d0fa1eb67d4362611
font_03_sfnt_off0001bedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BEDC 16244 bytes
SHA-256: 37bd064822a4139c5d8e3cdb2e2dd8d0ae9d956962f76839c9edaf1267f3d3f3

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