Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb915d348d71b39d…

MALICIOUS

PDF

70.9 KB Created: 2020-12-04 15:23:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7640bd4e622f3f1bb0a4d4e2b78576c6 SHA-1: 9d0160c397897aae2ea65e3c5c7d97f300340ce8 SHA-256: bb915d348d71b39d57ef890bee3a6004b7fa8c4b0e59707a9c91a89ea036c5b0
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 0.9997

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://traffset.ru/strik?utm_term=maine+senior+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459463/normal_5fca0bfbbd7ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402519/normal_5fae4a789fa1d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc591165e8e827d42ad8ebf/t/5fc6ed388f079636156c03aa/1606872377268/level_up_the_tiny_rpg_games_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1159a870-6f85-4e11-9142-a0d7e9f5fe57/82247529920.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e925ea4a794d56451110/t/5fc26f4f3c02f22b9d5b946c/1606578001471/mivosiruboj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bdd3513-26a3-4b45-b654-5a505349a2ac/nafobonewunusodavomutata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c7e97fa-cc30-447d-910e-bfa833c60e91/somewhere_over_the_rainbow_piano_sheet_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0187aa5bc066edfa15e28/t/5fc101ffeaf37e3b64bf7fb4/1606484480165/python_numpy_array_element_wise_multiplication.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bd38a95-6562-41f7-b5e9-db3a8439d863/gelatin_and_glycerin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc17bad5-0c6c-455d-b396-5a1bb1e6c0d8/38762283284.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/sears_protection_agreement_mailing_address.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e05929ad-bee7-46ed-9566-0c3e00f9cfcb/8822401247.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_off0000db56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB56 4964 bytes
SHA-256: b02d68fedbe37f3696d69642137c34fd2cc11c8be06eb31621c0af236d50651a
font_01_sfnt_off0000ec4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4E 10276 bytes
SHA-256: ba3d5f3660fc8a6ceb4d459c7e993216954ef484352422cfe4dd63a4d81c50a0

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