Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd808ceeb5da3d2…

MALICIOUS

PDF

78.8 KB Created: 2021-02-15 12:16:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 66812dca7352837d97241b1b5205ab2f SHA-1: c004488d1db6feb15ca7a0b96333965e0809a4b2 SHA-256: ebd808ceeb5da3d2f7effdeed0a35c3962cae3922721ed6fb431ec88bc7c44a2
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 URI pointing to a suspicious domain, likely intended to trick the user into downloading ROMs. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing lure.

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://crophysi.ru/123?utm_term=download+roms+gba+gameboy+advance+super+mario+land+2 PDF link annotation
    • http://purigoguwoz.22web.org/gukepojafakuwibirema.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403533/normal_5fd0791f99691.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5fdc7442df333.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393488/normal_5fdf4f3c32009.pdfIn PDF document text
    • https://cdn.sqhk.co/pibepufas/jlRfhhK/secret_codes_for_unlocking_android_phones.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424637/normal_5ff8a33142f5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_6016515f0438d.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/EjhNb0a/50944415953.pdfIn PDF document text
    • https://cdn.sqhk.co/dafibuxoki/ij3iHje/blackpink_rose_real_name.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481403/normal_60225204e88f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365563/normal_5ff09e3f03e97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374369/normal_5fd34d1f5e22a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449774/normal_5fe7b18a45074.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vepawipexujobok.epizy.com/banjara_dj_songs_new_2018.pdfIn PDF document text
    • http://zazisuj.epizy.com/operational_amplifiers_johan_huijsing.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA20 5720 bytes
SHA-256: f232642ff3487ceb7673f08e6de6a35b3d9d34c864ef0e64be3ec12e3a497524
font_01_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 10180 bytes
SHA-256: 8a232f1e977350fc91a7bd47dfc7583434fda1f646c5587b74f707a259151829
font_02_sfnt_off00012029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12029 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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