Malicious PDF — malware analysis report

Static analysis result for SHA-256 4baeb084872b0e65…

MALICIOUS

PDF

72.9 KB Created: 2021-04-07 21:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 88a08c76104f17df0e521b0449289641 SHA-1: 89b271344919ea6e372b70e3fd755bf14fe682df SHA-256: 4baeb084872b0e653bbd496154f2c1748c4f03837144afc6d6554a14df7a62c6
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a phishing or malware distribution campaign. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically flags the sample as a link farm on disposable hosting, reinforcing the malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://baarspo.ru/strik?utm_term=hp+probook+6560b+laptop+price PDF link annotation
    • http://frasqen.online/big_city_adventure_pc_games_freei31fz.pdfIn PDF document text
    • http://wordsidepost.top/instalacion_de_gas_natural_en_viviendatqr80.pdfIn PDF document text
    • http://nafebefunevido.iblogger.org/gomirivodapinexorewareb.pdfIn PDF document text
    • http://uscreditinquiry.info/wumisifawigofen7m.pdfIn PDF document text
    • http://jagefefixod.22web.org/performing_arts_meaning_bengali.pdfIn PDF document text
    • https://vudexugir.weebly.com/uploads/1/3/2/7/132710723/jogudedorux_notinutufebolu.pdfIn PDF document text
    • https://gixatupugibezi.weebly.com/uploads/1/3/5/2/135296842/xedupewajuruwabisufo.pdfIn PDF document text
    • https://waboralitenir.weebly.com/uploads/1/3/4/5/134504299/libugidilotul_dagorosizig.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/IjbNIMn/873409266.pdfIn PDF document text
    • https://bonesinidojesu.weebly.com/uploads/1/3/4/5/134591006/1705764.pdfIn PDF document text
    • http://vseti.life/numerype1j.pdfIn PDF document text
    • http://bitawulam.iblogger.org/verbes_avoir_et_etre_exercices.pdfIn PDF document text
    • https://cdn.sqhk.co/gewurasi/jjjiien/police_siren_app_iphone.pdfIn PDF document text
    • https://nusazipupuw.weebly.com/uploads/1/3/4/0/134042511/956261.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/ijhs05Y/my_home_design_dreams_free_online.pdfIn PDF document text
    • https://masarifixi.weebly.com/uploads/1/3/4/4/134486171/nasineleturotek.pdfIn PDF document text
    • https://tidoxanarapora.weebly.com/uploads/1/3/2/7/132710787/tunukiv.pdfIn PDF document text
    • https://cdn.sqhk.co/nuditufu/ieKidic/samurai_sword_store_japan.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
    • http://ruzuvune.epizy.com/robbery_bob_2_mod_apk_data_revdl.pdfIn PDF document text
    • http://pixibirorak.epizy.com/woxudevagifulaseviretuzo.pdfIn PDF document text
    • http://gaxodisesi.rf.gd/96677265934.pdfIn PDF document text
    • http://minapisifiret.rf.gd/woxosobonijakujanodal.pdfIn PDF document text
    • http://vulebirawesajo.rf.gd/58273856996.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_off0000d0a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A3 5016 bytes
SHA-256: 4e00dbe8098fd938fd7e6095a7c224f29d4613060459f0592b9efe82afa0543f
font_01_sfnt_off0000e1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BB 10616 bytes
SHA-256: ede82203526b5dd8eb24f513d51800c8026a0b5998fd3eea5c92bf80d1cdadf7
font_02_sfnt_off00010615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10615 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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