Malicious PDF — malware analysis report

Static analysis result for SHA-256 e772503cd089e734…

MALICIOUS

PDF

99.0 KB Created: 2021-04-05 22:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 45f22aa52011452624fc57717482c58a SHA-1: f915be57f50364a12ef33f8ad5c886b5b7438109 SHA-256: e772503cd089e7344ba9ea6e18e69e0b5c9f950e7fe3d17e651a4b42e48eb462
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via embedded URLs. No scripts were extracted, but the PDF structure itself is used to facilitate the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://dugedepap.ru/award?keyword=the+beautiful+names+and+attributes+of+allah+uthaymeen+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408594/normal_604fc05515a7f.pdfIn PDF document text
    • https://jatasurow.weebly.com/uploads/1/3/4/3/134358583/xomubunonopalodeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447915/normal_5ff0f8556ff96.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuvapexal/eihhgjg/mikixalizulof.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/1gjgdaD/doom_ii_secret_levels.pdfIn PDF document text
    • https://xijuxesipokufi.weebly.com/uploads/1/3/4/0/134042605/f8c9f7e29ef18c.pdfIn PDF document text
    • https://lurevovikofa.weebly.com/uploads/1/3/4/6/134693735/9732092.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484814/normal_5fd130cc10a05.pdfIn PDF document text
    • https://cdn.sqhk.co/vetesomiw/jjojgSv/97509953529.pdfIn PDF document text
    • http://bijipejip.iblogger.org/adharam_madhuram_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/mabisurud/gtsih0R/colorplanet_paint_by_number_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kiwusegofavuto.rf.gd/81832609199.pdfIn PDF document text
    • https://050a9d39-d8a1-4107-8be8-b2b70b72e454.filesusr.com/ugd/5262df_5ed19d9dde5a47e099c4afd9834e1155.pdf?index=trueIn PDF document text
    • https://6b2f37ea-3696-4b87-858b-663c379f6f6f.filesusr.com/ugd/16879a_5226d9a9d08740de89d2db1e1fc425b3.pdf?index=trueIn PDF document text
    • https://e44de090-c64a-4a0f-b555-2784aa0ac37b.filesusr.com/ugd/41d583_fd79839ee90e43ff8291fec65033bfba.pdf?index=trueIn PDF document text
    • https://0e67983c-e844-40c9-b604-97311ec94efe.filesusr.com/ugd/6e13d9_e2835e2fccba4222bf98fbbb2b1bff8b.pdf?index=trueIn PDF document text
    • https://d429d46a-6203-486b-8c9d-ede5597e1383.filesusr.com/ugd/419b00_9fd28ef2dafc4d80866d5cb9ea84a8a3.pdf?index=trueIn PDF document text
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_c4a7192704d14ab0b32127cf6c4cca6e.pdf?index=trueIn PDF document text
    • https://bdee3e82-1fe6-4084-b289-f15f5249f83e.filesusr.com/ugd/749937_6cd5d8146fc74b8e9bf1a1015ae01ec0.pdf?index=trueIn PDF document text
    • https://cc67bef4-e22e-42fd-bf01-3f02b15f800b.filesusr.com/ugd/080020_7231db7e29ba4117849652bd5c3a0759.pdf?index=trueIn PDF document text
    • http://mizoxojado.epizy.com/kowokabezotanolisebi.pdfIn PDF document text
    • http://rajusesozawan.rf.gd/mujabovidimolugel.pdfIn PDF document text
    • https://8ed6bd9f-de2b-4923-b7df-82f95eb18a03.filesusr.com/ugd/7fa32f_22f6aa5deca14a558e41c7149c4a23b7.pdf?index=trueIn PDF document text
    • https://ea64ff4c-51e6-4efc-8cc1-399682447901.filesusr.com/ugd/961f18_dee31a002f0c4a0c834a764562932f10.pdf?index=trueIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00014948.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14948 29732 bytes
SHA-256: 9020f35f3fa593b48075f10818e3d5d4cbbd277fdbd0b5fed58d0e15d99d6e0e
font_00_sfnt_off000111dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111DD 5472 bytes
SHA-256: 0aca4ad722d319e12d2c6cb7f7d1ccfb2f3d42f7568016cec807bc6b5cc41874
font_01_sfnt_off0001244f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1244F 10776 bytes
SHA-256: 5c8cd680aa8089b1a982222195bbece9a912076531d95f27c0261ce337e41ca9

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