Malicious PDF — malware analysis report

Static analysis result for SHA-256 693410448d604b1c…

MALICIOUS

PDF

75.5 KB Created: 2021-04-27 02:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 34b7a665f6ef3bfbba2c9a9828921324 SHA-1: 2b7167df031dee1aedc1e0856be5ba09fa8d12cb SHA-256: 693410448d604b1c2ab99a5676d686fba21cc562ff0cdf710798ae5d1203fef3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs and is flagged by heuristics as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a common tactic of luring users with deceptive content to download malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://jottigo.ru/strik?utm_term=ez+go+gas+golf+cart+manual+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385634/normal_604e97d0c770b.pdfIn PDF document text
    • http://zoxuruje.sportsontheweb.net/catacumbas_de_roma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_603ab7faebf2b.pdfIn PDF document text
    • https://ragusixiseditof.weebly.com/uploads/1/3/0/8/130814169/padikiten-kifol.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/65754726748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5fdbe754f3424.pdfIn PDF document text
    • http://nelilovodik.scienceontheweb.net/sepejifibafud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_605f4eb2380f8.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/fuzodiledovisipovisig.pdfIn PDF document text
    • http://teguruta.medianewsonline.com/punjab_textbook_chemistry_11th_class.pdfIn PDF document text
    • https://lefaxujil.weebly.com/uploads/1/3/0/7/130739779/sirowoka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478683/normal_60098b0741103.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/53248667555.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/tobasobesixi-rixiruro-setogonawekefuk-nuvimi.pdfIn PDF document text
    • https://gomafaned.weebly.com/uploads/1/3/5/2/135296522/4261879.pdfIn PDF document text
    • https://gujetorepirun.weebly.com/uploads/1/3/4/5/134502828/6945964.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://japamitafixe.myartsonline.com/45645473876.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/best_water_filtration_pitcher_consumer_reports.pdfIn PDF document text
    • http://ziwivazud.onlinewebshop.net/arris_surfboard_sb6141_installation.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/ar_aging_report_in_sap_bi.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/261267912.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/assembler_fichier_en_ligne.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/chupke_se_video_song.pdfIn PDF document text
    • http://tevaluzax.atwebpages.com/muwano.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/21722692221.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_off0000eb8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8F 5440 bytes
SHA-256: cd8bf0b136dd697a868be6fdc63116a3ad9ac28cc9662e3de53396224f5de5a0
font_01_sfnt_off0000fe19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE19 10024 bytes
SHA-256: 05cb5ad86dd117f686ce34e8f0be8f373c6bc59255298462ffd160d349d13634

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