Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f1b9fe4fc55bcc…

MALICIOUS

PDF

68.5 KB Created: 2021-02-22 03:29:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a337d37be3a700c29b8e0ef48833bbe5 SHA-1: 88da14737b4ade1207358a78680019e26cc74ecb SHA-256: 32f1b9fe4fc55bcc5c0ee5cc1c6b4ddcf67cf03cda5763d93b036a4012ea50d5
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/wix?keyword=the+monkey%2527s+paw+worksheet+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390642/normal_5fda5449a7e6a.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugisaxap/WlgcNje/81958438613.pdfIn PDF document text
    • https://cdn.sqhk.co/mugukawi/fu9xia1/entergy_new_orleans_quick_pay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_602556aea0db5.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/eibTebp/trail_climbing_red_deer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454303/normal_5fcd576d30bac.pdfIn PDF document text
    • http://pumeputokamodo.22web.org/politeness_theory_in_pragmatics.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376120/normal_5ffbe4be4dc69.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/bULEVC6/dujivagikitarozupu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5fd1739941347.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498366/normal_5fcee21d822f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381751/normal_601f03fcf1bd2.pdfIn PDF document text
    • https://cdn.sqhk.co/gupetipek/zjpgdid/go_all_night_long_lyrics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/radubozufiwo/bubble_sheet_college_board_sat.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/is_the_glass_house_on_netflix.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/anti-_drug_antibody_formation.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/nc_saltwater_fishing_pier_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/bacterias_coliformes_para_agua_potable.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/99507242393.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c21b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC21B 5008 bytes
SHA-256: a410bf92291621ace681005783edb38edbaa998df1818d11987c5d38a154d441
font_01_sfnt_off0000d30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30C 10256 bytes
SHA-256: c824a8f7ee18c67ebbf389a2ce8fe02227e3ce50d79c28eb5a78bbbfcd0899d1
font_02_sfnt_off0000f62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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