Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f9df4aa5740b36…

MALICIOUS

PDF

76.8 KB Created: 2021-03-07 08:07:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 59e61512316fcee369f45d6c8eb37ac6 SHA-1: 5e0c37a954050990094eb1ea6c7f26ba4cff4d13 SHA-256: 07f9df4aa5740b36ec684c9d82b5aface96bc4d727320e85211160f7f78e73a6
156 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or malicious content distribution scheme, indicated by the 'PDF_SEO_LINK_FARM' heuristic firing and the presence of numerous external URLs. The document body, though heavily obfuscated, suggests a lure related to service manuals, likely to entice users to click on the embedded links. The ML classifier and ClamAV detection strongly support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://leonvi.ru/123?utm_term=ford+ranger+service+manual+free+download PDF link annotation
    • https://cdn.sqhk.co/zajagatetode/hzhdjbl/need_for_speed_no_limits_apk_obb_revdl.pdfIn PDF document text
    • http://rovanenafet.getenjoyment.net/ragariwegewaj.pdfIn PDF document text
    • https://rikusinifo.weebly.com/uploads/1/3/4/0/134017093/419452.pdfIn PDF document text
    • https://kozitasulama.weebly.com/uploads/1/3/4/6/134647404/vuzanezikek.pdfIn PDF document text
    • https://cdn.sqhk.co/bemoranoz/hghhdhd/kanowetumudelubinipijo.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/39967423213.pdfIn PDF document text
    • https://zagumukukawikam.weebly.com/uploads/1/3/4/6/134608037/kejowutixazowu.pdfIn PDF document text
    • https://buxutagugumazas.weebly.com/uploads/1/3/4/0/134095839/b0de95adb.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawitaxug/NIih6Qf/gardenscapes_swamp_adventure_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/Rhgkfij/boxing_hero_punch_champions.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/jigezilor/excel_vba_protect_sheet_with_password_options.pdfIn PDF document text
    • http://xizokenimufewom.atwebpages.com/rain_bird_5000_mpr_nozzle_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/30386716656.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/windows_xp_startup_repair.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/69370758967.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/american_express_priority_pass_enrollment_form.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/wofafomamisifebopiwuzax.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/xibuletazuxiperavipuj.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/81390893895.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/gevejulida.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_off0000ee4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4E 5448 bytes
SHA-256: 2b8bbd7ede30a09e1181bb5045d1f6c9293ed278063dca4d4e79d3d09dbd49b1
font_01_sfnt_off000100dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DD 10852 bytes
SHA-256: 83262de0572e0eb737717465d3382ec094f1ef590c0bd566a4c22468cb1812ed

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