Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bfa9e032c1dc3ee…

MALICIOUS

PDF

70.9 KB Created: 2021-02-22 10:31:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f793f0cc4df0818bbd84f84ce227ff3d SHA-1: 92b216d9553fd69de23430f645932e11bde54c10 SHA-256: 0bfa9e032c1dc3ee9e3b884a105751f70c67d7e1c3db7849dfac596e4b43431f
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://maypoin.ru/wix?keyword=simpsons+genetic+probability+worksheet+answers PDF link annotation
    • https://vowopazi.weebly.com/uploads/1/3/4/0/134096587/c507d.pdfIn PDF document text
    • https://cdn.sqhk.co/miweguzeg/OjhRhgH/architect_draughtsman_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_5fd0dbadabe7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_5ff698bd83f1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421768/normal_5fc9235c74a5e.pdfIn PDF document text
    • https://ninusava.weebly.com/uploads/1/3/1/4/131436980/f6f8c2.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/jgygfgi/47412676362.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/764110.pdfIn PDF document text
    • https://wufowidujexo.weebly.com/uploads/1/3/5/2/135293423/435fcaeba811b.pdfIn PDF document text
    • https://cdn.sqhk.co/pivokazi/ezjihcL/carlcare_app_apk_download.pdfIn PDF document text
    • https://jizidetaji.weebly.com/uploads/1/3/4/6/134626841/mabikoxolejexem_wined_lipobesumerubax_fapitazalewu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425501/normal_600a9cb4ce307.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/gcFAwhf/73551808348.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421781/normal_5fccd2a654ba3.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/Yjh4zih/tunum.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/bubisifapagefe/bessemer_venture_partners_email_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/78114594459.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/bhojpuri_dj_remix_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/kabhi_alvida_na_kehna_movie_sabwap._com.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/41943303032.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_off0000d875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD875 5848 bytes
SHA-256: c0456ad914f23fbcdf1a000bd0c5129bc1a937f8e1069b38bf9e15d9a3c0c646
font_01_sfnt_off0000ec44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC44 9892 bytes
SHA-256: 95abc397455fa2f3d5569c6dd0aa0b5a54f2cf392e192fbdaa1602dcc7f54e42

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