Malicious PDF — malware analysis report

Static analysis result for SHA-256 4927bf92ceba0f4f…

MALICIOUS

PDF

70.1 KB Created: 2020-12-01 23:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0ad79b9fa2e021593f7e20c0d76944df SHA-1: 6f38e651421696f453607b5e7f49a78a2ca9b2af SHA-256: 4927bf92ceba0f4fb7d0851b717a845fb5ea1c68d646aa5e5a4d373aa2c27bca
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 0.9992

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://traffking.ru/strik?utm_term=essence+path+of+exile PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369511/normal_5f8aebd37da1d.pdfIn PDF document text
    • https://zomerasojukoluw.weebly.com/uploads/1/3/4/7/134769652/3493344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486566/normal_5fb25a4ca8a3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_5f91394dcf687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5fb6a76830dd5.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/7f5fcdc6-78d8-4c22-85e9-c52bfa801827/refowofiloxitepipofuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d08c8c0-8af9-420c-97a7-1a55fdf067cc/47175660172.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/injustice_gods_among_us_mod_apk_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/68523579157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0371d61d-6020-499e-82d2-b101df4c96b6/childbirth_without_fear_cover.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_off0000b568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB568 3000 bytes
SHA-256: 936930131c8077f7bbdbf23d2beac27cd560664c80849680355ea6b18c5e0a41
font_01_sfnt_off0000c01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01D 5032 bytes
SHA-256: 43f590850ffb24023cd24b633490a708cce8cc0d3dc876f5f163bd5d59fbbaca
font_02_sfnt_off0000d14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14E 10600 bytes
SHA-256: 2a4cf9d35e840b3bcc1cfebd51fc4844a48d82799c5312392db9f7d0ee088a60
font_03_sfnt_off0000f5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CC 16264 bytes
SHA-256: d1dab2a49ea25cce040d691a842bd1a58b317eb9724727151af979eb96b58614

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