Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c0686de5aed10b…

MALICIOUS

PDF

81.1 KB Created: 2021-02-15 22:00:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 95059a0d76e6622b2534bf73a611c0a2 SHA-1: ca79326f51cd58b271ad2d67ada465886ad4b7c4 SHA-256: e6c0686de5aed10b440772a5c843bdd5444e22237d19004c51481b4e3bd52756
136 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a redirector link, indicating a phishing lure for free downloads. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL points to a suspicious domain, likely serving as a phishing landing page.

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://seumenha.ru/123?utm_term=is+write+label+legit PDF link annotation
    • https://cdn.sqhk.co/govazilose/jjggLsy/bird_feeder_hangers_for_windows.pdfIn PDF document text
    • http://wigobonimedex.iblogger.org/12921308406.pdfIn PDF document text
    • http://kyhni.site/bansuri_music_ringtone_free1v1e1.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/rovuweraja/left_menu_xamarin_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/gopro_hero_5_black_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/jutadipinukejiwuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/47826644234.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/aulas_de_violo_iniciantes.pdfIn PDF document text
    • http://jariluwalube.epizy.com/argos_case_study.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/bemelajawuz.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/famorag.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/58631665787.pdfIn PDF document text
    • http://tawajopawizapa.rf.gd/juleketaxel.pdfIn PDF document text
    • http://pefodajisotavuk.rf.gd/17695246805.pdfIn PDF document text
    • http://legofovivaxom.epizy.com/36735954151.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD2 5020 bytes
SHA-256: d095623856ec881706f4b87ae7af37694a4541e315f3c742d16d14d8dbd78e4a
font_01_sfnt_off0000fd05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD05 11200 bytes
SHA-256: 14156ad48cb6c1ed0698e6d42e8624591d3464235138307c5971b8e012d816fa
font_02_sfnt_off00012231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12231 16344 bytes
SHA-256: ed45a24507f18daeaf6b6e9cac20235e9e43bed88bc2d44b7621eff085e31190

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