Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ddf347492713c65…

MALICIOUS

PDF

76.9 KB Created: 2021-03-04 15:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 07474dfa126ead0afc9f1f23134c6e61 SHA-1: b821f7a91fb775b87211d535a2ae158bbdc38c9b SHA-256: 0ddf347492713c651e9473df7df2adc685691741bef6c44df3022daf704af7d6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to disposable domains, identified as a link farm designed to redirect users to potentially malicious content. ClamAV and ML classifiers strongly indicate maliciousness, classifying it as a phishing trojan. The presence of external URIs and the link farm heuristic suggest the primary goal is to redirect users to phishing or malware distribution sites.

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://xajibur.ru/wix?keyword=black+and+decker+mouse+sander+polisher+ms500+manual PDF link annotation
    • http://doordash.fun/tabela_anexos_simples_nacional_2019woy08.pdfIn PDF document text
    • http://romeita.space/mijexiganaxemo4g3ro.pdfIn PDF document text
    • http://gemofesane.medianewsonline.com/is_canon_good_for_video.pdfIn PDF document text
    • http://verification-help.business/paxalawumifadogepisi1t92.pdfIn PDF document text
    • http://thedouche.xyz/la_cimbali_m29_selectron_service_manual3gsch.pdfIn PDF document text
    • http://argo-tourism.com/vivofaxjq81.pdfIn PDF document text
    • http://giocodigital.website/geophysical_research_letters_latex_template0wtnf.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/42253270352.pdfIn PDF document text
    • http://idealicait.site/estrategias_aprendizaje_significativomzuv1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vetovolixexa.epizy.com/fupelifulani.pdfIn PDF document text
    • http://zofopopisi.rf.gd/graphs_of_sine_and_cosine_functions_calculator.pdfIn PDF document text
    • http://nakarajibap.myartsonline.com/why_is_my_front_loading_washer_leaking_water.pdfIn PDF document text
    • http://linuxuxotarife.rf.gd/48745469200.pdfIn PDF document text
    • http://lebasadalo.epizy.com/57968131477.pdfIn PDF document text
    • http://movubekanijemo.rf.gd/sisinadawifazaver.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/how_to_replace_trimmer_head_echo_srm-210.pdfIn PDF document text
    • http://kogudab.rf.gd/puvuxodiva.pdfIn PDF document text
    • http://luzasuzudi.rf.gd/time_schedule_template_printable.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/rawagukifovexajiduv.pdfIn PDF document text
    • http://famereraba.epizy.com/baldi_s_basics_game_free.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_off0000ef3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3D 5692 bytes
SHA-256: c9e52b4092e8b84daf0c19815669d5b1b6ebc5323082dd81a9ee122e17167228
font_01_sfnt_off00010273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10273 10424 bytes
SHA-256: 18063dfa20ff2a54699d5a91afddca0296988dc82f9da12c791b155a6fe671d2

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