Malicious PDF — malware analysis report

Static analysis result for SHA-256 895c6538c0a88947…

MALICIOUS

PDF

100.0 KB Created: 2021-06-01 04:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a856c271494e5a64a1513397e1d4074a SHA-1: a8b59888f98ad80791354b3cc070ee5aa48c46bf SHA-256: 895c6538c0a88947db2e829601c674848114c122591d5d8f88b48972e24cff2f
126 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It contains numerous external URIs, with a primary one leading to a link farm on disposable hosting, likely intended to redirect users to malicious sites. The document's structure and embedded URLs suggest a phishing attempt disguised as a deal for a second-hand mobile phone.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=2nd+hand+android+mobile+under+2000 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491152/normal_602439201e61d.pdfIn PDF document text
    • https://vorusasu.weebly.com/uploads/1/3/2/7/132740845/2132531748.pdfIn PDF document text
    • https://paxuxavige.weebly.com/uploads/1/3/4/3/134373921/xejukikigo-zaluzelodem-gidadik-lusogu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392210/normal_60062ad214a45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486200/normal_5ff1632257172.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://kedetuwi.pbworks.com/w/file/fetch/144419367/how_to_install_apeman_c450.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/9004960338.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/994fd8a1-0a27-418c-a1c7-cd38840eba08/7714086757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27e4e882-d914-43fd-881b-32e1c6384d1a/car_service_manuals_download.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/f/zubixumurugap.pdfIn PDF document text
    • http://wuranosa.pbworks.com/f/how_to_consolidate_data_from_multiple_workbooks_in_excel_using_vba.pdfIn PDF document text
    • http://poxanoralanu.pbworks.com/w/file/fetch/144426225/dakifufabalanutudu.pdfIn PDF document text
    • http://vowujepojez.pbworks.com/f/7910108149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c844612c-aa6c-48c1-9611-ca81e9db3f2f/cambiar_de_milimetros_a_pulgadas_autocad.pdfIn PDF document text
    • http://poxanoralanu.pbworks.com/w/file/fetch/144423180/family_and_friends_3_special_edition_free_download.pdfIn PDF document text
    • http://papoxuva.pbworks.com/w/file/fetch/144422760/9449357265.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2C 5208 bytes
SHA-256: ebe920c54dd046f2439a287d0c2d3b648c2384abab51d6388313333abbc975fb
font_01_sfnt_off00012ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA8 13932 bytes
SHA-256: 372753a18af2b18242a71325470e0f0adda86dba42fb322977a56cf4da626c3b
font_02_sfnt_off00015acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15ACC 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off0001701d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1701D 5188 bytes
SHA-256: b655851ac60410eb7f591bab7c5e5683ac76aa8fea32602549d9d0b0aa8aa455