Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d1b27fcc139474d…

MALICIOUS

PDF

74.2 KB Created: 2021-03-02 00:53:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: acb940a8357f6f17f7034345c03b2ef4 SHA-1: 075693fddb261855417b2cfe85861a38ff7604d4 SHA-256: 8d1b27fcc139474daad7612e8e05b57aa3bd51e0be8e7271560f1f6885b68665
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=asus+m5a97+plus+usb+3.0 PDF link annotation
    • http://pepesox.22web.org/how_to_insert_sd_card_in_samsung_a70.pdfIn PDF document text
    • https://cdn.sqhk.co/menasimax/G4hbjib/money_maker_lyrics_2_chainz_sample.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465949/normal_603a57d06ae29.pdfIn PDF document text
    • https://cdn.sqhk.co/jufebarur/fmAgf5I/fasiwovudesib.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/mqejbLx/hair_salons_open_on_sunday_in_raleigh_nc.pdfIn PDF document text
    • http://xolixelov.22web.org/amazon_prime_amelia_bedelia_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379718/normal_5fc9a14747abb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xekurenu.rf.gd/how_to_unlock_i-pilot_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/kerboodle_textbook_answers_french.pdfIn PDF document text
    • http://tumevadokopeki.rf.gd/nolaterizetafanil.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/interpretation_of_abg_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/78400154726.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/botany_view_hotel_gig_guide.pdfIn PDF document text
    • http://nosenek.epizy.com/religious_education_lesson_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/eeyore_pin_the_tail_template.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_off0000e6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DB 5696 bytes
SHA-256: c287c6279cd1486bd25b5317b4b5f3a8a3d8982e0fbfdd15ca27aff10cdecea9
font_01_sfnt_off0000fa2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2B 9904 bytes
SHA-256: 0e06f55f341bb802aa81ab8110047ed5173c42f239907025774cea4b6f15acaa