Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1e0d11414eb17d…

MALICIOUS

PDF

105.9 KB Created: 2021-03-29 09:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 9f326573cfca023d4e3d1e9b38b4ca4b SHA-1: 0c18b09a181b00baeb56ab31feaa4c1910753eab SHA-256: 9d1e0d11414eb17dfc91103a2d1cd02db252a3905406b3aa3f63140c530eb695
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicative of a link farm or SEO spamming operation. ClamAV and ML classifiers strongly indicate maliciousness, with the PDF_SEO_LINK_FARM heuristic specifically identifying this behavior. While no scripts were extracted, the presence of numerous external URLs suggests the document's primary purpose is to redirect users to potentially malicious or unwanted content.

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://druttle.ru/wix?keyword=raft+wars+5 PDF link annotation
    • https://felupujefokedab.weebly.com/uploads/1/3/4/6/134621420/sazolitutovipuv.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/1799cbfd.pdfIn PDF document text
    • http://ru-dev.xyz/sri_rudram_chamakam_stotram_lyricselwun.pdfIn PDF document text
    • https://cdn.sqhk.co/loxexafetivu/aigrOaV/18129371485.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzipogowita/gcigcie/best_deals_on_verizon_iphones_right_now.pdfIn PDF document text
    • https://jupolojujilozas.weebly.com/uploads/1/3/4/5/134598947/8fb3a17612ad3e.pdfIn PDF document text
    • http://golosa-spasibo.ru/setosenizamqj3ce.pdfIn PDF document text
    • https://nukegakisuwagaj.weebly.com/uploads/1/3/0/7/130739250/24214df3572.pdfIn PDF document text
    • https://telewebejuta.weebly.com/uploads/1/3/1/6/131607630/e5eec1.pdfIn PDF document text
    • http://sodahub.pro/483361616315o1p7.pdfIn PDF document text
    • https://peramixirado.weebly.com/uploads/1/3/1/6/131637131/feranama-tunedawigifase.pdfIn PDF document text
    • https://noguvipeves.weebly.com/uploads/1/3/4/7/134717425/4643551.pdfIn PDF document text
    • https://cdn.sqhk.co/zevinikiwi/hicBZjg/55374468617.pdfIn PDF document text
    • http://mabay.fun/defendant_s_answers_to_interrogatoriesio8ku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/963b3d9d-6bdf-4f39-a0c2-ccda0d96bbc7/how_to_compute_vif.pdfIn PDF document text
    • http://vadawowugozopul.epizy.com/alangudi_pora_pulla_video_song.pdfIn PDF document text
    • http://siderawe.epizy.com/79898487206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acdef9d5-b95a-4675-a39d-96c520e35cea/shark_navigator_lift-away_deluxe_nv360_upright_vacuum_blue_manual.pdfIn PDF document text
    • http://kifemulawej.epizy.com/69345039987.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_off00016391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16391 4952 bytes
SHA-256: 9807564b1f5d391fc7228b1071d02e2a9293e6d84f9ac199b65bea5eb4196b72
font_01_sfnt_off0001749b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1749B 11516 bytes
SHA-256: 4993a96d60de50db60aa8fbfaa7b3076a4fe26b1666ba732befd1778be9ac810

Open this report in the interactive analyzer, or submit your own file for analysis.