Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a34fc942b277489…

MALICIOUS

PDF

87.8 KB Created: 2021-03-02 14:46:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 609266f6cb3ad23a6ca68e275e3cb54b SHA-1: 9864bfa6d98b9eb697810b93acc04759a81b26eb SHA-256: 5a34fc942b277489f3b6a61564d075650854d65013f3fc4b38396651eb12a2f1
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a search result for '2008 dodge avenger'. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs suggest the document is designed to lead the user to further malicious content, likely a phishing page or a payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://dafemum.ru/strik?utm_term=2008+dodge+avenger In PDF document text
    • http://rowaxuxot.22web.org/zexapubogamova.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/busidulaxotezanizexunan.pdfIn PDF document text
    • http://dipazekonowa.mypressonline.com/tegodogesizanatoxasuj.pdfIn PDF document text
    • http://wordsidepost.top/sweet_alert_js_and_csso7n4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415302/normal_601b9bdcc6ebc.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/common_core_ela_standards_grade_5_writing.pdfIn PDF document text
    • http://jajitefufig.iblogger.org/android_pelvis_diameters.pdfIn PDF document text
    • http://biweekamnf.com/me_before_you_book_summaryhje87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_6013956047211.pdfIn PDF document text
    • http://lazirawolewok.getenjoyment.net/prince_lionheart_premium_wipe_warmer_instructions.pdfIn PDF document text
    • http://vereffka.xyz/how_to_get_tiny_knots_out_of_string7m5sc.pdfIn PDF document text
    • http://sweetygirl.club/slim_fit_cafe_racer_jacket3hzll.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/xufoxorog/charity_and_andres_world_of_dance_performances.pdfIn PDF document text
    • http://wobanunep.myartsonline.com/mizoxaf.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/lanovuzoma.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/immigration_department_australia_report.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/41467931163.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/11867253514.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_off00011b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B34 5216 bytes
SHA-256: 2daeae4840efe93c5053abecc5cf8d2bb8521b2dcd85b247bfb8bf7395414ae1
font_01_sfnt_off00012d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D07 10908 bytes
SHA-256: 3cbc6e8e9028158584fa99c64adb0bac7fb1f42f1f1533462d7be780f240c2d0

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