Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf46771138528b9a…

MALICIOUS

PDF

70.9 KB Created: 2021-02-23 17:26:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6ced6569f7e2f6f2a1ff62ebf8b68512 SHA-1: d928bbb7f66cd0ada78f51dba33eeeed3d363b8a SHA-256: cf46771138528b9a811cf4ab7e00c003383c7729839fb5654c85aa29f1689222
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://jottigo.ru/123?utm_term=what+to+do+if+my+treadmill+belt+is+slipping PDF link annotation
    • https://cdn.sqhk.co/vunelebu/ifjbPQc/bbc_radio_1_top_40_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/tagisojitilu/jbfjeha/72204785203.pdfIn PDF document text
    • https://cdn.sqhk.co/jisujesox/guicOIT/tap_tap_pubg_chinese_version.pdfIn PDF document text
    • http://vinnipoh.fun/pupetogiwozoforavenepemxgme4.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/hdjjQJs/kalaha_board_game.pdfIn PDF document text
    • http://choosenews.space/megovazujq1dy1.pdfIn PDF document text
    • https://cdn.sqhk.co/dukizukijire/UJBBhbu/tomup.pdfIn PDF document text
    • http://3-bureaureport.info/59950788466um33z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371013/normal_5fff0d48b0d4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421366/normal_5ffa882597fc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416927/normal_5fed5c084176b.pdfIn PDF document text
    • http://skidki-day.shop/financial_accounting_10th_edition_robert_libby4z8rb.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/hfwPhgf/hitman_sniper_rifle_briefcase.pdfIn PDF document text
    • https://cdn.sqhk.co/mawedabe/VxOQTGz/wicked_wolves_ruka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422628/normal_5fc8e6529a519.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/novifamigot/self_appraisal_form_sample_filled_for_teachers.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/thomas_calculus_early_transcendentals_12th_edition_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/4858445933.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_off0000d8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CC 5712 bytes
SHA-256: 36bc5d9b43edba847dbcd570c260ecc642a4fcbda64bedb597f6761f4e0d9aa0
font_01_sfnt_off0000ec1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1F 9960 bytes
SHA-256: 5168d3971e7879893ea16ab44b0fa2fa8a18e3b9db507bccf8ca0f2f23b39215