Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be0b6598b8a8cb7…

MALICIOUS

PDF

88.0 KB Created: 2021-03-14 22:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa57c2cf56047d6e42113e9b0167b8a4 SHA-1: ecf1f59a6b6528805b6201338f41435fda7c7512 SHA-256: 6be0b6598b8a8cb7b9955e4d17230908564e03351a0b288cf290721e05d2916d
156 Risk Score

Malware Insights

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

This PDF file contains numerous external links, with a primary malicious URL identified as 'https://xezojetit.ru/wix?keyword=ragnarok+mobile+leveling+guide+140'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, suggesting a tactic to distribute malicious content or engage in SEO poisoning. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=ragnarok+mobile+leveling+guide+140
    • https://bomupafevusoze.weebly.com/uploads/1/3/1/4/131407549/4327147.pdf
    • https://vawuzusafut.weebly.com/uploads/1/3/4/8/134863851/ponamovafaf.pdf
    • http://parovosi.mygamesonline.org/hoover_steam_cleaner_replacement_pads.pdf
    • https://cdn-cms.f-static.net/uploads/4467912/normal_603d474932338.pdf
    • http://winoxolupuvil.getenjoyment.net/wixebesine.pdf
    • https://static.s123-cdn-static.com/uploads/4425737/normal_5ffd36e5843ff.pdf
    • https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/f70b7f8ae4cc9a.pdf
    • http://jewogipuwivi.medianewsonline.com/stoner_john_williams_free.pdf
    • https://tapogizixe.weebly.com/uploads/1/3/4/8/134897788/a503e0ee95c.pdf
    • https://befewegumezozem.weebly.com/uploads/1/3/1/4/131453636/605569.pdf
    • http://nanebaxexob.getenjoyment.net/dream_dictionary_teeth_falling_out.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fuwuzerijofa/self_introduction_letter_template.pdf
    • https://s3.amazonaws.com/xeroguru/91100344916.pdf
    • https://uploads.strikinglycdn.com/files/dda9a7b5-d333-4b24-a900-b7e77e8aec88/60681977625.pdf
    • https://s3.amazonaws.com/zuvovoxigumuz/16828110243.pdf
    • https://uploads.strikinglycdn.com/files/3437e75e-bbc0-4133-9ad6-f930f7a23468/does_it_snow_in_washington_state_in_december.pdf
    • https://s3.amazonaws.com/neporezofov/macbeth_act_2_scene_1_translation.pdf
    • https://uploads.strikinglycdn.com/files/e5f9299a-cb7d-4a46-88cc-4e20cbbf6588/navy_seal_workout_routine_chart.pdf
    • http://lafagelupuf.myartsonline.com/59423524752.pdf
    • https://s3.amazonaws.com/piwanisaj/pancreas_endocrino_fisiologia.pdf
    • https://s3.amazonaws.com/suxiweke/autoroot_tools_apk_xda.pdf
    • https://s3.amazonaws.com/zasepo/buzebuweki.pdf
    • https://s3.amazonaws.com/bubeto/realismo_mexicano.pdf
    • https://s3.amazonaws.com/wujixus/jajunorawozixamunaluze.pdf
    • https://uploads.strikinglycdn.com/files/33732db8-fde1-4b16-a43c-cc95d11876e1/how_to_reset_a_pioneer_mixtrax_touchscreen.pdf
    • https://uploads.strikinglycdn.com/files/12184984-147a-4e0d-89c1-84e957dcd47e/3465465460.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011890.bin
2c1d569ca0bdf60e1714e0a136de4f42f5a5d3804a3500341f4e2422911c27a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11890 5520 bytes
font_01_sfnt_off00012b56.bin
6afad4aa676e670c86ea0d35260152fd317e03ac3b235031f0cea9fb3650277c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B56 11432 bytes

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