Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc995ae87bd2bd41…

MALICIOUS

PDF

89.4 KB Created: 2021-06-10 07:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a3253dcc6316f5dadbbbad3353c576c1 SHA-1: ac65246405581498ffb6ef25f0eb8187bfa82d6c SHA-256: dc995ae87bd2bd41aff072a7111f3df13e10ed0e97926424a7a77955e1d74bfa
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 0.9988

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://huntic.ru/pbw?utm_term=dragon+city+ice+fire+dragon PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391611/normal_5ff81ee0b7d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484093/normal_604b4cfda75a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478123/normal_6032f88869742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481409/normal_60251b241754d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426407/normal_5fd994bc2ac0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488329/normal_5ff06c7d36e31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403531/normal_5ff965af3b1b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456135/normal_5fd93ea1bc5fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405929/normal_60657dd7045d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415304/normal_604cdd2b280fd.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4501993/normal_60b587246d88d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388612/normal_600410f495bd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447464/normal_603c1372112cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453718/normal_5fd8891dd7218.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457311/normal_5fdc4666271f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451744/normal_5fd71315d27b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486535/normal_5ff650c6546c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368224/normal_5fef367628a74.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/b345b103-332d-44d2-907a-fc4f02d19820/sipisefulazumokonasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19acdbf5-e35c-444b-a23c-aa1e395d4cb8/rapukibilewajin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a76b0569-cb8d-4f3d-861d-664dc9cdc2de/90795680587.pdfIn PDF document text
    • http://zeratuwolima.pbworks.com/w/file/fetch/144661716/74750203373.pdfIn PDF document text
    • http://mawasuwov.pbworks.com/w/file/fetch/144565506/a_beginners_guide_to_constructing_the_universe_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a558d6fb-b8c4-42e9-9504-ec4fde50742f/bow_tie_medical_broadview_heights_ohio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10506 5080 bytes
SHA-256: fa5438b6a7b108272d134c002829e6249c76fb6785f503ee13495aa3443357a8
font_01_sfnt_off00011670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11670 13968 bytes
SHA-256: 9251b3cd57fed418a4a4c619db986f7ee14c709200af96ffe250f8c55865cde9
font_02_sfnt_off00014316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14316 16060 bytes
SHA-256: 18c238ad931013c02f8b9edf520ceec5ec83417eda11db08e4be278b2e55a3cf

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