Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b4a3345f15c888…

MALICIOUS

PDF

78.6 KB Created: 2021-03-28 04:26:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 04c895927182e68ec4a033a6c98a9311 SHA-1: 4155785245a8477a8295e9eb3db5edf959de6847 SHA-256: 10b4a3345f15c888ede7b32586b5f4227d40199c419dce2ecf60546aa4924dd5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain ('mezovuduw.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, further supporting malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/wix?keyword=babysense+video+baby+monitor+setup PDF link annotation
    • https://zelelifejoba.weebly.com/uploads/1/3/4/3/134321633/xezamarugotisiruzam.pdfIn PDF document text
    • https://wagemerefav.weebly.com/uploads/1/3/2/7/132712282/6e03a2cd4d7.pdfIn PDF document text
    • https://wuwonerosetopux.weebly.com/uploads/1/3/1/6/131606808/dijubilafij.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/fWYidii/tiwifu.pdfIn PDF document text
    • http://nijuwebil.iblogger.org/how_to_learn_graphic_design_in_bangla.pdfIn PDF document text
    • http://jamedoxeka.22web.org/94824211486.pdfIn PDF document text
    • https://cdn.sqhk.co/tozimozeka/AEEjaud/adobe_lightroom_tutorials_free.pdfIn PDF document text
    • http://fivadoguna.medianewsonline.com/zixan.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/ifGidij/ludo_king_game_online_6_player.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zodawanuror/new_cg_love_song_2019.pdfIn PDF document text
    • http://zakefuki.myartsonline.com/class_9_maths_construction.pdfIn PDF document text
    • http://nenanimaw.rf.gd/pangolier_guide_dota.pdfIn PDF document text
    • http://japunulu.rf.gd/libatovu.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/simon_and_garfunkel_ukulele.pdfIn PDF document text
    • http://roxewew.epizy.com/oxford_dictionary_file_free_download.pdfIn PDF document text
    • http://nigaxatu.rf.gd/xfinity_tv_modem_setup.pdfIn PDF document text
    • http://bujepefu.epizy.com/zefuzon.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/zane_new_books_2020.pdfIn PDF document text
    • http://dekidad.epizy.com/xubowimivemejoxeviwapuwaw.pdfIn PDF document text
    • http://pojezevosolodo.rf.gd/62207649748.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C1 5308 bytes
SHA-256: 591eba771732bd42c7cb7cef2d1c4964667b279d061a89c1849ede1d827dcc7d
font_01_sfnt_off0000f9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AB 10828 bytes
SHA-256: b95d182e3a6ed3b3a684442b6a9c111b69a7105d585f08abed109bbda40cb07b
font_02_sfnt_off00011e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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