Malicious PDF — malware analysis report

Static analysis result for SHA-256 d89f144d553fe347…

MALICIOUS

PDF

76.2 KB Created: 2020-12-19 20:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c82b3c22c7aa845e0b3b29a7e772fd37 SHA-1: 148ae15cecd90e743fe9f236d58874267252fb6c SHA-256: d89f144d553fe347487342f06a3838afdb85273138dc10c9ce6b23381100fafa
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 0.9998

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://trafffi.ru/123?utm_term=retailing+management+levy+weitz+9th+edition+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4460980/normal_5fcc615067f8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_5fd6efc75ea1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5fd5f71bdf994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458827/normal_5fa9431d22ab4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391319/normal_5f8dfcafdaf50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419851/normal_5f9c4795b8f58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f993673e2466.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/5fc5c19bab79f442f24acc6a/t/5fd0dfdda4b4ef2db6b1464e/1607524317894/short_stiletto_nails_matte_black.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5946a6a5-ff01-47e7-a3dc-908d6ff2841f/batubikudemu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27a90c14dfd36fefb8bc0/t/5fc3c04aeaf37e3b640ea14f/1606664267338/the_golden_carpet_somerset_de_chair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc7da470-56c1-4a87-bdc1-8c5e5aca631b/59487057815.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc597f260f2895dc107beb3/t/5fcd4e64c00f007ceaf70f48/1607290468752/darkness_rises_new_class_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58f3da87939686427c656/t/5fc75883a3696915e22380e1/1606899849497/kokodivudosudezezizum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc9c5750e6d73f00913032/t/5fdcdae1bba18874b88f3471/1608309474063/48204943401.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/archware_ppsspp_games.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e3c612facd59cec67b06/t/5fd1d1a6ebc7ce75e8b332b2/1607586215539/68236844415.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_off0000eae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE2 5648 bytes
SHA-256: 1feb4e8a8859ad6b1a7bdc1e6fb885600b1f9ec55e5e3f17f3329e83c0859149
font_01_sfnt_off0000fe29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE29 10776 bytes
SHA-256: e56b3db5e4cf18a610d7dfe1763beca9bee0e633e4e09ed655e0143761601663

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