Malicious PDF — malware analysis report

Static analysis result for SHA-256 5151b4442ad69eeb…

MALICIOUS

PDF

75.5 KB Created: 2021-03-11 06:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 282e77e1ef0c6310eebfcfa9541bbb3f SHA-1: 737d39725d3199405203999d1aa9de0ac81123cf SHA-256: 5151b4442ad69eeb6cefdc7d18b144bc9b1e9bdd50a9a64b5159cf9bb86095c5
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate a likely attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=automatic+identification+and+data+capture+pdf
    • https://static.s123-cdn-static.com/uploads/4479454/normal_5ffe9615bb69c.pdf
    • https://static.s123-cdn-static.com/uploads/4368770/normal_6002c1c72f1a5.pdf
    • https://cdn-cms.f-static.net/uploads/4416665/normal_600aee0d6e580.pdf
    • https://cdn-cms.f-static.net/uploads/4483081/normal_5fd19c541e0f6.pdf
    • http://vimobewawulipiz.mypressonline.com/diversity_statement_faculty_position_sample.pdf
    • http://worameruvejaka.mywebcommunity.org/sketchup_pro_online_courses.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1e89beb3-c9f3-441f-9c03-deda53ebcfcf/dark_souls_3_weapon_scaling_guide.pdf
    • https://s3.amazonaws.com/gofilafixu/inductive_vs_deductive_research.pdf
    • https://uploads.strikinglycdn.com/files/5af2ca51-2c71-4e46-95e4-2d6f4945b83c/8520445550.pdf
    • https://s3.amazonaws.com/fadupazageraf/44974557729.pdf
    • https://s3.amazonaws.com/jebupofedijakuk/nezojuvirokefepuzep.pdf
    • https://s3.amazonaws.com/tokudapele/xisufoxepu.pdf
    • https://s3.amazonaws.com/davawina/88298068489.pdf
    • https://s3.amazonaws.com/zamemigojat/ambili_malayalam_movie_2019_song.pdf
    • https://s3.amazonaws.com/xazarujokemus/jigavurozowof.pdf
    • https://uploads.strikinglycdn.com/files/6fb9a2e5-ce16-4cd0-bac5-bb38d71b58f1/31168064381.pdf
    • http://dapekafuxururo.myartsonline.com/73170729316.pdf
    • https://s3.amazonaws.com/fulazelof/bpsc_assistant_online_form_2018.pdf
    • https://uploads.strikinglycdn.com/files/1902fb62-2424-4f91-91e6-3fa63a5ce214/best_plant_based_diet_plan_for_weight_loss.pdf
    • http://lipabarud.atwebpages.com/pefixipo.pdf
    • https://s3.amazonaws.com/levumoduf/95057810055.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_off0000ebe6.bin
98e502145b5237aa3a683bfdcecef8052d442352acf4fbf4063c9de5eae8def6
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE6 5080 bytes
font_01_sfnt_off0000fd15.bin
2c8d6565b02c4d5a00cbd594db9f04c35772d1bb8f7a5b0f9692fec675b245a0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD15 10264 bytes