Malicious PDF — malware analysis report

Static analysis result for SHA-256 c884fa436a593803…

MALICIOUS

PDF

70.0 KB Created: 2020-12-02 15:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f8465b0b3e138c3fe49fbd2d54963068 SHA-1: 8e00b7d0ef145928e90c52628ebe948b15b336de SHA-256: c884fa436a593803c4593d133d5294c5d8caedb4df7d311b438d42a4e317205e
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://trafffe.ru/strik?utm_term=hush+hush+becca+fitzpatrick+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386830/normal_5fa4958e9dc8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f88a0ef062ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494877/normal_5fc280c14bc8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470535/normal_5fb4b2886d2c9.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/5fc11ab312facd59ceae2d6e/t/5fc53b9e18e72e5fdb827805/1606761375337/pamela_brown_cnn_facebook.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5306ac14dfd36fe0d8a55/t/5fc6e7f92ac13f1ee9abd67f/1606871033760/68626341269.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc283e75bcb0228a28ca719/t/5fc6cc2da038a451bcd92a27/1606863918549/92586182881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbf2bab7-9353-4817-85be-e5e933ed8cfc/7530737878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7d6e745-b4e5-43d8-9c22-d0948ba15321/le_plan_cycle_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adb1c246-4d69-47da-a4ae-184094e3adce/apk_smartwatch_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63c85beb-b5fd-4c03-9138-7452b2b8f97c/laxomularogowona.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf80268bfc51861676584/1606219779311/navy_njrotc_uniform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adac0182-dc2c-4893-9a89-21500624cda7/tulibrodefp_fol_solucionario_2018.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_off0000d511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD511 5424 bytes
SHA-256: 67c64a14867c9b322df21a5ee7152f99aacd55c95ccf57a7b57fb34d3d00517e
font_01_sfnt_off0000e780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE780 10504 bytes
SHA-256: 2bef1412826161a7c980213f4949f3a81732064d27d7e1943a1f3c2737d325ad

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