Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f48731096dd0e4…

MALICIOUS

PDF

64.0 KB Created: 2021-02-21 08:59:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d6a2677db2d291e1442adc8930cdc089 SHA-1: 29709a03efe57773c959f472bf854d4fcb2f4a50 SHA-256: 26f48731096dd0e446e1f9f989ba69a60fbf6523290459c5e661aa49db74ebde
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://maypoin.ru/wix?keyword=suzuki+boulevard+m50+parts PDF link annotation
    • http://draiwenstore.online/ali_a_intro_bass_boostedcohqf.pdfIn PDF document text
    • https://malugula.weebly.com/uploads/1/3/2/6/132695531/6418725.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/nnicFja/asteroid_hunt_3d_model.pdfIn PDF document text
    • https://moxeguzivega.weebly.com/uploads/1/3/5/9/135965209/b414f.pdfIn PDF document text
    • http://anrostore.ru/89726247439p7ger.pdfIn PDF document text
    • http://dayzcommunity.info/adobe_photoshop_express_premium_apk_freezcw4i.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/zhaibia/notes_and_lists_iphone_app.pdfIn PDF document text
    • http://myimperfectmomlife.com/iceberg_slim_pimpthbc0.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/VDkhjdW/wii_switch_console_for_sale.pdfIn PDF document text
    • http://hyipinvest.site/synonyms_and_antonyms_worksheets_for_grade_5_with_answers252v9.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/kudefem/afrikaans_to_english_offline_translator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/active_voice_vs_passive_voice_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/film_bodyguard_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/93760807575.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/xemelosiva.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/arabesque_sheet_music_flute.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_off0000bbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF3 5788 bytes
SHA-256: 70e7a88c8dc3ac63ab1f4f0faedc9cab445a3653427702a0bef26c5be4615684
font_01_sfnt_off0000cf9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9F 10444 bytes
SHA-256: 91534b8c92262cebee51fb1072a6d41daa0d55f8459eb6bf99ff648a939a9b14