Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06b8317e80450f0…

MALICIOUS

PDF

73.2 KB Created: 2021-02-26 15:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0f65a327c56e440f418a1e1724ba8f9d SHA-1: eb1307ceda889bdf81770556a41e732fcc581969 SHA-256: f06b8317e80450f0e53d8d7b06ec4e3f06d2e9caefd212d2b5807410e02d605f
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, indicating it functions as a link farm. The presence of a 'utm_term' parameter suggests a phishing or malicious campaign aimed at directing users to potentially harmful content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to deliver a second-stage payload or lead to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/strik?utm_term=dungeons+and+dragons+evil+campaign+ideas PDF link annotation
    • https://lurabesuweki.weebly.com/uploads/1/3/4/5/134524451/2a88d3ed0.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/cXgjijT/beat_the_boss_3_hack_android_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gunobawiwax/iifvgdt/pinball_star_online.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/fhgzMhi/zabumudoranepol.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/hJkzUjg/tubamefadumalugul.pdfIn PDF document text
    • https://cdn.sqhk.co/jomawutid/Rhadtie/life_is_strange_before_the_storm_trophy_guide.pdfIn PDF document text
    • https://movalibixijol.weebly.com/uploads/1/3/2/6/132682530/paxonuf_wiboxiwor_rujosajigosu.pdfIn PDF document text
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/falirup_meriruravuk_bapazibeka_gowufox.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/s088ghh/hungry_anaconda_snake_simulator_3d_apk.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/1fba0f459a942e.pdfIn PDF document text
    • http://togoxuruk.22web.org/68747329802.pdfIn PDF document text
    • https://vuledojovux.weebly.com/uploads/1/3/5/9/135962602/kuzopozi-widifiwujanig-zafubexifevefij-zebugu.pdfIn PDF document text
    • https://vabakapis.weebly.com/uploads/1/3/1/4/131453405/xowetarenekoduto.pdfIn PDF document text
    • https://cdn.sqhk.co/xugumewaz/hggf5DR/principles_of_management_for_mba.pdfIn PDF document text
    • https://jitebemaduk.weebly.com/uploads/1/3/4/6/134692965/fumunirijil-wesijusimajeziv-wigegodu-vuvinaju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fozusiraviwip.epizy.com/colombia_budget_travel_guide.pdfIn PDF document text
    • http://nidudovuj.epizy.com/mc_hammer_can_t_touch_this.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_off0000e345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE345 5452 bytes
SHA-256: 9ad728f0dc1c02ab9b8fe6d67db2067658431e2dd470343ca9310ccc5511f7d6
font_01_sfnt_off0000f5ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CE 9872 bytes
SHA-256: 9273841729f2ee3c10ac4e2fd859a80629883de5490bae8782c75f93a4e9a85b

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