Malicious PDF — malware analysis report

Static analysis result for SHA-256 26241b69b48527ce…

MALICIOUS

PDF

75.0 KB Created: 2021-02-25 02:03:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ef4667b787b6669aba2d870db7fdb7ac SHA-1: b5a411606a07a4afbe720fe539b28410fcd689b1 SHA-256: 26241b69b48527ce1a71d462762a541ec017fa2954e67a7937278c4f43bffcd8
252 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yafferge.ru/wix?keyword=showbox+apk+2018+android+old+version In PDF document text
    • https://cdn.sqhk.co/xibidodoko/mhfmgfs/atlanta_weather_saturday_morning.pdfIn PDF document text
    • https://wuzovogupo.weebly.com/uploads/1/3/4/7/134720757/4643732.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/xYhiL9m/36681806187.pdfIn PDF document text
    • https://cdn.sqhk.co/lezebulodiw/DhbsBgf/85148923953.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/ghvuxgg/21278676657.pdfIn PDF document text
    • https://delumatoli.weebly.com/uploads/1/3/5/3/135392794/b638e.pdfIn PDF document text
    • https://cdn.sqhk.co/zotiperugi/gcifcM4/orange_money_transfert_international_burkina_faso.pdfIn PDF document text
    • https://fakilopatezi.weebly.com/uploads/1/3/1/6/131606638/nemepuxeluzoxosid.pdfIn PDF document text
    • https://jofufibiwew.weebly.com/uploads/1/3/5/3/135347649/wanoxuganavub.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/gcxMKzm/mountain_bike_shops_online.pdfIn PDF document text
    • https://binewetakug.weebly.com/uploads/1/3/5/3/135326509/9623bd9.pdfIn PDF document text
    • https://jugivukovetid.weebly.com/uploads/1/3/0/7/130739525/8619001.pdfIn PDF document text
    • https://cdn.sqhk.co/bovavadas/ibhfgi6/kijeko.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/nutanigonu/shark_navigator_nv22l.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/46371307828.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/84038832410.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/celine_dion_songs_waptrick.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/is_eso_worth_it_2020.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_off0000e6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E6 6096 bytes
SHA-256: 435328c3971777c8f7eb3a2a043248dc4895defb61a2bcba8162b7922a50cfee
font_01_sfnt_off0000fbb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB0 10360 bytes
SHA-256: 7667e86363734d9633c0b66dbbcc716164481c83349ad10184d54d7179d1f0e9