Malicious PDF — malware analysis report

Static analysis result for SHA-256 447765fa7c8fa310…

MALICIOUS

PDF

75.7 KB Created: 2021-03-28 05:04:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9180c6f0eb727a0ce46eb40f78515a44 SHA-1: 211c50c2b11e01b81a043d38fa82f1c49fc2cc89 SHA-256: 447765fa7c8fa31010edbb97f896e7a20ebb5246e6a232820be41c64352d453b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, many pointing to SEO-optimized PDF files, suggesting a link farm or phishing operation. The heuristic PDF_SEO_LINK_FARM and PDF_SEO_UTM_REDIRECTOR_LINK indicate a high likelihood of malicious intent, likely to redirect users to phishing or malware sites. The ML classifier and ClamAV detection further support the malicious verdict, with the primary IOC being the redirector URL.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://lozipotod.ru/wix?keyword=vip+loan+shop+address PDF link annotation
    • http://gooddevice-online.com/2636928057xxxj3.pdfIn PDF document text
    • https://dugaxopi.weebly.com/uploads/1/3/5/3/135305828/kinote.pdfIn PDF document text
    • http://liwadaxezaf.getenjoyment.net/66799665221.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/angular_5_file_from_s3.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/osciloscopio_bk_precision_2120b_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_6055f88c34f94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392656/normal_605fd8cd69a95.pdfIn PDF document text
    • http://circulyarkadigital.xyz/2005_honda_odyssey_catalytic_converter_locationx7vgs.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/tesajibafipivokotimoxon.pdfIn PDF document text
    • https://jetezoxow.weebly.com/uploads/1/3/1/3/131379231/7144047.pdfIn PDF document text
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/vepudugi_poniz_pilonalu_wepozodi.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/marvel_comics_book_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373516/normal_5fdff7c204cdd.pdfIn PDF document text
    • https://lerojapozexux.weebly.com/uploads/1/3/4/0/134016693/1f4bfe39f8.pdfIn PDF document text
    • http://findattime.com/52726272730oc75d.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/icsee_user_manual.pdfIn PDF document text
    • http://rm-swis-mine.com/how_do_i_change_my_roomba_batteryaknda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tirisesu.onlinewebshop.net/abrsm_grade_5_theory_book_answers.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/zoom_h1n_vs_tascam_dr-07x.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_off0000eb1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB1D 5012 bytes
SHA-256: a72809b9ab2d7f3b5771cb7e9295d52b12b192e0a6bc313a9cd5d9d15fe0cdac
font_01_sfnt_off0000fc1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1C 10980 bytes
SHA-256: c3d30ecba571e9eb75e2a67f599ddd4e55b750bd64e186c755e3de564e2197aa