Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a80e635250fdc75…

MALICIOUS

PDF

80.6 KB Created: 2021-02-05 14:46:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0d83625e3d91581013e62dcea798ecb5 SHA-1: 52197a879a36cc5eb78604562dd2312bbbd520e4 SHA-256: 3a80e635250fdc7504170f5bdc0790cde76c72cdad5c176c1adab55395817ebd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=hip%20hop%20album%20releases%202019 PDF link annotation
    • https://cdn.sqhk.co/sejujona/hbiga5p/papimo.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/TBp89u1/recargar_happy_movil_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/djagfZT/black_friday_best_buy_black_friday.pdfIn PDF document text
    • http://jonariz.22web.org/carbonyl_reaction.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/jb1jfib/alien_shooter_games_ps4.pdfIn PDF document text
    • http://regsenatvumen.website/dropcam_pro_user_manual4i9sd.pdfIn PDF document text
    • https://gixoxiri.weebly.com/uploads/1/3/4/7/134707295/mazefas-mabuzoluvef.pdfIn PDF document text
    • http://centerbluebadge.com/zodusarixemaj6u5t.pdfIn PDF document text
    • https://kivasemav.weebly.com/uploads/1/3/2/6/132680863/4511a2004.pdfIn PDF document text
    • http://shopsmmv.site/83545351536fw0yo.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/bexolamabad/wusimopowel.pdfIn PDF document text
    • http://lixumogal.epizy.com/breakthrough_advertising_book.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/gamavasimufumapi.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/pedetodumeje.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/watercolor_splash_brushes_photoshop_free.pdfIn PDF document text
    • http://patenat.epizy.com/prezi_template_free_book.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/15485594119.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/lady_bird_imdb_parents_guide.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_off0000faf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF5 5644 bytes
SHA-256: 73fd918eff7bb1eea9cf88b030875680ac77a4b219a682e80dddcbf048585197
font_01_sfnt_off00010deb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DEB 11216 bytes
SHA-256: c2188ce1732fb4afbd8760236374094b218f6ea82a29d0f36a8146d6a6255f79

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