Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c287a511821ba60…

MALICIOUS

PDF

72.8 KB Created: 2021-03-03 07:01:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bfea736a6cc2aa3f788788afd50a29f3 SHA-1: 1cc6e4f6e0ec58e83ee368dee29a363dfd9f8688 SHA-256: 8c287a511821ba6067be46debf57987a483711f58c8708dafa211d386f59210a
126 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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/award?keyword=how+to+set+up+bowflex+ultimate+2 PDF link annotation
    • https://pajenugemin.weebly.com/uploads/1/3/4/6/134677616/puzowopubuzobejoneze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_600c557910af8.pdfIn PDF document text
    • https://nakidero.weebly.com/uploads/1/3/4/5/134524904/1eb465.pdfIn PDF document text
    • https://jajibesuwazigix.weebly.com/uploads/1/3/1/3/131383486/e59a4fc4e.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/jsjiOhf/pixoxa.pdfIn PDF document text
    • https://cdn.sqhk.co/jekunesoru/igiidhi/earl_of_sandwich_disney_springs_gluten_free.pdfIn PDF document text
    • https://lexezidelaxo.weebly.com/uploads/1/3/4/6/134605078/zenovowuwaxika.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491965/normal_600ee61518ed0.pdfIn PDF document text
    • https://cdn.sqhk.co/vozevadijut/ehcd6hb/ibis_paint_x_tutorial_gacha_life.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485152/normal_5fe0032f5f22a.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
    • http://tefesapebeto.rf.gd/derusimavusuvesad.pdfIn PDF document text
    • http://vapovefov.epizy.com/rugged_android_tablet_for_sale.pdfIn PDF document text
    • http://lafasusatar.rf.gd/16153984504.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_off0000d149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD149 5120 bytes
SHA-256: ad1b4f8f925d789961a34d77609cee04b4a2a314d4e5f3925160a5679abaa6ed
font_01_sfnt_off0000e2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D2 10492 bytes
SHA-256: 36b2b1913b07e57f5ca6f8dc79420ea09be5c523fcd83af8f679d27e634256c7
font_02_sfnt_off000106be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106BE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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