Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3b2ab862501795…

MALICIOUS

PDF

82.5 KB Created: 2021-02-27 01:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: f72dcb0063b6bbf2c5a1d41084b3045c SHA-1: 7bcd1f2dba724004fabda5c6476abd69f8c991c2 SHA-256: 9d3b2ab862501795c0165eeb801373a99dfe87085e6951a8791b8b3d8e8fc187
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that suggests a phishing or social engineering lure related to disabling security software. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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://baarspo.ru/strik?utm_term=how+to+turn+off+eset+smart+security+5 PDF link annotation
    • https://cdn.sqhk.co/sotatixorawi/ia2heji/xuxuzo.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/how_to_check_injector_pump_pressure.pdfIn PDF document text
    • https://cdn.sqhk.co/fetuxudo/hfhiRif/lol_karthus_jungle_run.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457848/normal_600d53606d3dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_602a254d00213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_6038f4aba82a2.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/5Wx705f/outer_ear_infection_in_dogs_treatment.pdfIn PDF document text
    • http://mitimewigupito.mypressonline.com/how_to_cite_a_website_with_no_author_apa.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/jJjhChe/lg_xboom_go_pk7_watts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369903/normal_6004b5d79137a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477409/normal_600c784aae464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_60186180e378f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477386/normal_5fc606d062c46.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/metubevozisul/two_point_hospital_level_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/arundhati_tamil_movie_kuttymovies.pdfIn PDF document text
    • http://zupitatip.atwebpages.com/download_driver_hp_laserjet_1320n_for_windows_10_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/50124129523.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/ms_powerpoint_templates_free_2018.pdfIn PDF document text
    • http://letutemoxeluz.onlinewebshop.net/vinawogigugevotowad.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/ice_sheet_breaks_off_antarctica.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_off0001068e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068E 5272 bytes
SHA-256: b0a07653737198eac7b649a6a6a1dd2ba1af3b04f771e2664f39338a15bfc838
font_01_sfnt_off00011880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11880 10724 bytes
SHA-256: 90df3462f6b5e1f7d4df252bd548185f8f94f232d9dad8e5327dcd3f61750461

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