Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa4073d8a0ef9e7e…

MALICIOUS

PDF

80.8 KB Created: 2021-03-21 22:23:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4683992c50addd08d3b6f8d92e40c083 SHA-1: 7e67d9ac3212cabeab7422413a10154cfb8467f7 SHA-256: fa4073d8a0ef9e7e9db2a2f6f55d90e2232088dfe153a9958ee7571917bb974a
126 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing or malware distribution lure. It contains numerous embedded URLs, including one pointing to 'jottigo.ru', suggesting an attempt to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a large number of links on disposable hosting, further supporting the malicious intent.

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=dosimetry+market+report PDF link annotation
    • http://dimopun.mywebcommunity.org/35470977096.pdfIn PDF document text
    • http://keniworu.mywebcommunity.org/bebowubakekinege.pdfIn PDF document text
    • http://ketoxitigojaluk.sportsontheweb.net/99444635539.pdfIn PDF document text
    • http://xufamorazogubov.sportsontheweb.net/what_greek_god_is_thor.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/christmas_carol_book_download.pdfIn PDF document text
    • http://desokore.medianewsonline.com/what_are_the_5_yamas_and_niyamas.pdfIn PDF document text
    • http://koparikamoze.scienceontheweb.net/ricardo_abramovay.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/51455239058.pdfIn PDF document text
    • http://sosogemizibu.mypressonline.com/jogodozevafi.pdfIn PDF document text
    • http://nidewopovuwubo.mypressonline.com/gazobimovafarojoxi.pdfIn PDF document text
    • http://kuliwegi.sportsontheweb.net/gavutiluripes.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/ghK5Qjc/98462347263.pdfIn PDF document text
    • http://xakidofe.sportsontheweb.net/accounting_for_management_by_sn_maheshwari.pdfIn PDF document text
    • https://cdn.sqhk.co/pasojixaju/5je6hdv/tibug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fodukenama.epizy.com/35815150536.pdfIn PDF document text
    • https://61249681-e2d1-4375-841a-b3723294d79c.filesusr.com/ugd/3d514e_f9de7ab3e3704843b91da52df7d7e10b.pdf?index=trueIn PDF document text
    • https://34e223d5-b18a-4f89-96b3-7c58aa965d90.filesusr.com/ugd/440e29_c4b28fc15b6e4cf19e2b60d71086d206.pdf?index=trueIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/budom.pdfIn PDF document text
    • http://nonogopikizezed.rf.gd/pomupiwegepuz.pdfIn PDF document text
    • http://vubenotabajumem.epizy.com/bell_potter_research.pdfIn PDF document text
    • http://besafetusupug.atwebpages.com/vebanugebisewaxadote.pdfIn PDF document text
    • http://fevurilaj.epizy.com/kadasenokewup.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_off0000fff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF1 5096 bytes
SHA-256: d3a8a6818405a4f8b611cc2f74399bd5aba90b5ccb2183f4829ac3907d1afa08
font_01_sfnt_off00011140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11140 10876 bytes
SHA-256: 4316e71afacb0858c546aba60e48fdacfc3311ed47e4814d9df1de60fb11db39

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