Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2307ba175820a6…

MALICIOUS

PDF

89.5 KB Created: 2021-03-03 07:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 0fa53ccd6c7969b231b716d217d0829c SHA-1: ba4c67fa9f19636c8f23b9812ef8ac0434ce201e SHA-256: fc2307ba175820a68666d096004cf10c3c584399d1c41011e39d30d139fa083a
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/award?keyword=asus+sabertooth+990fx+r2+0+cpu+led PDF link annotation
    • http://wufamega.scienceontheweb.net/casio_fx-115es_plus_decimal.pdfIn PDF document text
    • https://cdn.sqhk.co/baxewoxevum/CHOhegi/labisowopikeburelu.pdfIn PDF document text
    • http://zomaragexavope.sportsontheweb.net/how_to_determine_electron_group_geometry.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/ieijKij/84935252355.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/how_to_open_ezdrummer_2_in_pro_tools.pdfIn PDF document text
    • https://cdn.sqhk.co/gepabafi/jijejeQ/85212563193.pdfIn PDF document text
    • https://cdn.sqhk.co/lunilageruvu/Ljfvmjd/pearl_s_peril_hidden_object_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jedugapi.epizy.com/bpsc_mains_admit_card_format.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/mathematica_5._2_free_windows.pdfIn PDF document text
    • http://fiwiduropewoxo.rf.gd/10069957432.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/bobikofumaf.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/77706266707.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/beat_saber_cracked_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/eclipse_oxygen_for_selenium.pdfIn PDF document text
    • http://buvumitibeve.rf.gd/uc_browser_for_java_samsung_b313e.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/best_software_to_test_pc_performance.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/acer_iconia_tab_a200_replacement_digitizer.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/hotstar_vip_hack_free.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/54016097226.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_off00011fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FEC 5872 bytes
SHA-256: 5a19679d980fa3399c497a05f9fa810a006e518f2ea4fbc625fa34d776975e0d
font_01_sfnt_off000133e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E0 10824 bytes
SHA-256: 7a51342044aa73dc2b5c899dd57f452e5b7d10c9a2096470830c9e83786baf4a

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