Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa0658b07d5b71d…

MALICIOUS

PDF

77.9 KB Created: 2021-04-09 01:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 91d8998bc22b06774fe92b5fe5e921f2 SHA-1: e0bf75eb7231f0b32508c70aa2bcbd43a271699a SHA-256: 9aa0658b07d5b71dfd2fd9a770167be30ca123e111f239ed7eb1a46dd144a389
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, identified as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs suggest the document is designed to redirect users to potentially harmful content hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

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.
  • 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://botokaw.ru/strik?utm_term=is+there+a+season+2+of+big+little+lies+on+hbo PDF link annotation
    • https://cdn.sqhk.co/konajera/AGQcjji/xofajadajaxujaw.pdfIn PDF document text
    • https://cdn.sqhk.co/donuvoduvedo/hMS5w1O/tamil_play_video_song_hd.pdfIn PDF document text
    • http://fuxezaboxekave.scienceontheweb.net/maths_book_for_class_9_cbse.pdfIn PDF document text
    • https://bezodidamivozel.weebly.com/uploads/1/3/2/6/132683328/4d4769f556b198a.pdfIn PDF document text
    • https://ruzepekipup.weebly.com/uploads/1/3/1/3/131398244/xutafibamizolo.pdfIn PDF document text
    • http://gallery-shop.site/duliwilixugovarixm42oa.pdfIn PDF document text
    • https://dofisizowi.weebly.com/uploads/1/3/4/3/134327642/maluro-pujobat-daxedim-dazowuxunivu.pdfIn PDF document text
    • https://banodita.weebly.com/uploads/1/3/4/3/134311275/situwajijudi.pdfIn PDF document text
    • http://ruszaimclub.ru/android_studio_online_editorvbpjp.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/hbdG5hf/7592482350.pdfIn PDF document text
    • http://ledy66.net/rilivonevotatutuwr3xhh.pdfIn PDF document text
    • https://widosogepe.weebly.com/uploads/1/3/3/9/133986955/woladifo.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/cjOKJgi/33507560137.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/eqkVhe8/96480418193.pdfIn PDF document text
    • https://cdn.sqhk.co/bamebuxi/MS7jfq1/science_lab_equipment_list.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/2je0jgn/xidovo.pdfIn PDF document text
    • https://rutuwupu.weebly.com/uploads/1/3/1/3/131378820/bipuwag.pdfIn PDF document text
    • https://dedidebu.weebly.com/uploads/1/3/2/7/132740692/dd390748dc1.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuxilav/gfjsGIc/download_call_of_duty_mobile_garena_apk_uptodown.pdfIn PDF document text
    • http://lapiwudoxavov.scienceontheweb.net/65085698693.pdfIn PDF document text
    • http://216tilford.com/what_does_memento_mori_meaning_mac_miller990lv.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/introduction_to_calculus_and_analysis_vol_2_solution.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/79672108392.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/vikamotigegusezuxefujugi.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/wrEnjc9/power_rangers_legacy_wars_character_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/eS9hiic/color_by_number_halloween.pdfIn PDF document text
    • https://janolonixo.weebly.com/uploads/1/3/3/9/133987325/6424c3efbf2.pdfIn PDF document text
    • https://nufomesamibu.weebly.com/uploads/1/3/5/3/135332564/lofularetaji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF318 5236 bytes
SHA-256: 270472677008754a1417e223876dafd2f6f2d7d2a1ff3ade1fdbbca0308bbd95
font_01_sfnt_off000104e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E4 10940 bytes
SHA-256: edda2cfea94646911fe98db9ce35c9fa303e6405c4b061538c2246d1995fc275