Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b5a3447eb292c8…

MALICIOUS

PDF

82.0 KB Created: 2021-03-01 12:59:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: f718a92cde04d69ab4daa83e9106c2e7 SHA-1: 528c69f1db2ba6f1926bfeff3a6f31110a8710d6 SHA-256: d0b5a3447eb292c8178e027fc2c28fefc0d6da9bfee17bda76cd007ab7a27d20
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV also detecting it as a phishing trojan. The primary malicious behavior observed is the embedding of numerous links, with at least one pointing to known malicious redirector infrastructure. The document body is heavily obfuscated and unreadable, but the presence of embedded URLs and the link farm heuristic strongly suggest a phishing or malware distribution attempt.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=fate+core+pdf+pl In PDF document text
    • https://dagatalodizutod.weebly.com/uploads/1/3/4/8/134883817/tekubegagam.pdfIn PDF document text
    • http://lotibamuzuti.scienceontheweb.net/james_patterson_deadly_cross_synopsis.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/nipitekepisojes.pdfIn PDF document text
    • https://juvetobewuneted.weebly.com/uploads/1/3/3/9/133997509/68e198f11e14c57.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/aprendizajes_clave_biologia_primer_grado_secundaria.pdfIn PDF document text
    • https://mifimixaxenerut.weebly.com/uploads/1/3/3/9/133999571/1177781.pdfIn PDF document text
    • https://cdn.sqhk.co/jaguwubax/00SEvLi/nozosiwalomizap.pdfIn PDF document text
    • http://liwurivosopap.medianewsonline.com/jason_and_the_argonauts_book_3.pdfIn PDF document text
    • https://dagagiketilijo.weebly.com/uploads/1/3/4/3/134312633/c5c6a32.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/4r2gh8l/kubajiwilaz.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/how_to_change_pump_belt_on_bissell_proheat.pdfIn PDF document text
    • http://larebalin.mypressonline.com/equivalencia_neumaticos_moto_pulgadas_a_milimetros.pdfIn PDF document text
    • http://lusoxokurutugap.22web.org/whatsapp_status_love_video_tamil_songs.pdfIn PDF document text
    • https://tisemadu.weebly.com/uploads/1/3/4/3/134387657/rasokoj.pdfIn PDF document text
    • http://faxixovojaja.sportsontheweb.net/kejevuzu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rerinago/avast_free_offline_installer_2016.pdfIn PDF document text
    • http://kipikavotofi.rf.gd/buludibep.pdfIn PDF document text
    • http://vebusatoro.atwebpages.com/hp_envy_4500_e-all-in-one_printer_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/bandos_guide_reddit.pdfIn PDF document text
    • http://luwefotikejumu.rf.gd/balance_sheet_liabilities_and_stockholders_equity.pdfIn PDF document text
    • http://tuzuxutetug.atwebpages.com/which_12_basic_functions_are_odd.pdfIn PDF document text
    • http://ruwopepifip.rf.gd/ingersoll_rand_air_compressor_parts_near_me.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_off0001030d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030D 4924 bytes
SHA-256: b9c8d0026e2cbee2c16351d1c10f19e8c59f1559e87f11d0a792bb76286db508
font_01_sfnt_off000113e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E5 11488 bytes
SHA-256: 8249be32f7699921327c61654052bf869c5c92ec08404566c077cdbecdfcc0f3

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