Malicious PDF — malware analysis report

Static analysis result for SHA-256 a754dfff4e05dcd4…

MALICIOUS

PDF

69.6 KB Created: 2021-02-16 06:05:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e2d36844058514711301d98c31cbffdd SHA-1: 493314b136b4cdb3f8ae78735d69198991b3e928 SHA-256: a754dfff4e05dcd4777941d53c901c36cbf1e14188d18a0e877ea8f3c6a48c3a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/123?utm_term=how+can+i+update+my+samsung+j3+software PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486963/normal_601e3ba188c33.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/CjfhjxR/beyblade_burst_app_luinor_l4_qr_code.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482645/normal_5fd1c68cbfd8a.pdfIn PDF document text
    • https://meboropob.weebly.com/uploads/1/3/2/7/132740462/ff8651b367391a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5fdf1c0199152.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_6006a0910bf25.pdfIn PDF document text
    • https://pobunusegem.weebly.com/uploads/1/3/4/4/134460984/fazes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473031/normal_601b4f5ea5cef.pdfIn PDF document text
    • https://cdn.sqhk.co/rinulazopun/pBCgj5O/35671955943.pdfIn PDF document text
    • https://cdn.sqhk.co/sawusuzi/B1ohajb/vuvaziteworisatupazatu.pdfIn PDF document text
    • https://nokidevekixim.weebly.com/uploads/1/3/2/3/132302759/vafiremegosum-bapasixo-mudegafawopadut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499309/normal_5feff6d790065.pdfIn PDF document text
    • https://nebemono.weebly.com/uploads/1/3/4/3/134331812/5066033.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/bikikanafopavu/becky_albertalli_libros.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/6327814514.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/chidorigafuchi_park_japan_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/xaropakexug.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/chockfast_red_data_sheet.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_off0000cf5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5D 5836 bytes
SHA-256: 7d1ee910f77edc2ad6774065f98548ede0901a30760ef9db4334d4cfa41f271b
font_01_sfnt_off0000e34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34E 11144 bytes
SHA-256: c0eb95870ccd7d31b53d535f35a60fc8d948a0cd82d4904efb914d76d2e29c4c