Malicious PDF — malware analysis report

Static analysis result for SHA-256 144285bda352f05d…

MALICIOUS

PDF

465.1 KB Created: 2021-05-09 12:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9ebdeef7ca2a0a4e41f6967b1684b790 SHA-1: 65d07a3a54060739334322f801020ca7e665de8d SHA-256: 144285bda352f05da8e0151ffaf90a9524bb47aca64a4c863984970f57c6a8fa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall detection suggest the document is designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9142

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://xajibur.ru/strik?utm_term=kotor+walkthrough+korriban PDF link annotation
    • https://waguwejulunesu.weebly.com/uploads/1/3/5/3/135301122/9481401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481667/normal_600d99e2dab24.pdfIn PDF document text
    • https://kilexudu.weebly.com/uploads/1/3/5/3/135347894/sepilalaguka_vigoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489988/normal_6069f0b3d7854.pdfIn PDF document text
    • http://chebsvet.ru/how_much_oil_does_a_2004_dodge_ram_1500_5.7_hemi_takerjtbs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5ff665a4a5497.pdfIn PDF document text
    • https://gotivewa.weebly.com/uploads/1/3/1/0/131070711/mijuzoja.pdfIn PDF document text
    • http://espacecmb.xyz/civil_war_april_1865srlv8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412894/normal_5febf292c0290.pdfIn PDF document text
    • https://naxibozagut.weebly.com/uploads/1/3/4/5/134580084/6c05a.pdfIn PDF document text
    • http://about-central.com/foxekeduraxkwajm.pdfIn PDF document text
    • https://malotote.weebly.com/uploads/1/3/4/8/134872882/bafejubaporodek_wukefe_durukidosebisek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nomekerileme.epizy.com/mezukekukazidog.pdfIn PDF document text
    • http://litulovimanuji.rf.gd/good_gym_exercises_for_runners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a07752-659d-4268-9e61-21ba5f035b99/learn_hindi_books.pdfIn PDF document text
    • http://lebikur.rf.gd/credit_cooperative_society_bye_laws.pdfIn PDF document text
    • http://nugagopi.epizy.com/zojidibuzux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42fdca47-1e07-4c44-9ccd-0fca95061085/canon_powershot_sx700_hs_camera.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_off0006f968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F968 5036 bytes
SHA-256: 1267ce809597d6a0f7030bce3cb433e4b293650cffe6cff5c378afc1ee97f6bd
font_01_sfnt_off00070a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A95 11976 bytes
SHA-256: 1af10017f02aad8362047bd78c51aa1caf98da6c0e4b29e945c5fbd537d91db4

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