Malicious PDF — malware analysis report

Static analysis result for SHA-256 043813e80c3bcf4c…

MALICIOUS

PDF

166.4 KB Created: 2020-11-09 21:37:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 38f96c21deac1e4e76207d645e3a4e2b SHA-1: d4c87aec6c792f9fa466bef33eebe78e0245d15b SHA-256: 043813e80c3bcf4c981735ed1c816174d9f005f63418cf1a154814110405bc32
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?keyword=rocky+point+elementary+school+ny In PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/b9ecfceca901.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/032f48b397.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371269/normal_5f89852b98cda.pdfIn PDF document text
    • https://jupoviladuxeru.weebly.com/uploads/1/3/4/3/134310568/a1ad5f6a573d9a.pdfIn PDF document text
    • https://nevitasez.weebly.com/uploads/1/3/4/3/134305442/fijivodiwijibawejowa.pdfIn PDF document text
    • https://noloturajikule.weebly.com/uploads/1/3/4/4/134486045/tavug.pdfIn PDF document text
    • https://giwakatunu.weebly.com/uploads/1/3/1/4/131437107/sibapuzujideja.pdfIn PDF document text
    • https://dozexida.weebly.com/uploads/1/3/4/5/134590021/gepadajuwul-libozesalu-gapugitonurad.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/mojuduliwefagud.pdfIn PDF document text
    • https://vozupixog.weebly.com/uploads/1/3/4/3/134312338/282ace309b149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f881d057d350.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/racing_games_unblocked_games.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/99485927442.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/five_star_zipper_binder_with_shoulder_strap.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/lejonaxobotufib.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/jipoxixadi.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_off0002540d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2540D 5348 bytes
SHA-256: 22fe604491573f09696786c71a290d6df7f3696ed975c1501320339528282aae
font_01_sfnt_off0002661d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2661D 11200 bytes
SHA-256: 9177d8eae4473f5724adb1d6077302bdf29efbf522ca66cacc9f94003334452d

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