Malicious PDF — malware analysis report

Static analysis result for SHA-256 563ece20963d66ba…

MALICIOUS

PDF

61.3 KB Created: 2020-12-17 19:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73cf04e18fa3015be22faa92041f8f49 SHA-1: d512cb59f95b50564860359b98292748fe238df3 SHA-256: 563ece20963d66ba34bb53d8a889078c6433cb9d0703c9cbfbdbeef95d4becb9
96 Risk Score

Malware Insights

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

The PDF file contains a URL that mimics a search result for free 3D models, likely intended to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://trafficel.ru/aws?utm_term=3ds+max+models+free++plants
    • https://static.s123-cdn-static.com/uploads/4405185/normal_5fcbfa2f465b5.pdf
    • https://cdn-cms.f-static.net/uploads/4475992/normal_5fb8b654b7dc0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mefadedosuw/wifenavagaboduzijepu.pdf
    • https://s3.amazonaws.com/jiwisigetizoxif/17727302133.pdf
    • https://s3.amazonaws.com/tasufagijaremo/guidepost_montessori_assistant_head_of_school_salary.pdf
    • https://uploads.strikinglycdn.com/files/b637475a-cdb0-481b-80fe-2d06ce49f9aa/53019532933.pdf
    • https://s3.amazonaws.com/rebomedug/android_studio_duplicate_line_shortcut.pdf
    • https://uploads.strikinglycdn.com/files/250e7a15-004a-48e8-b21e-0fb6e103c0e1/pajusemo.pdf
    • https://s3.amazonaws.com/vipinib/nufaseluk.pdf
    • https://uploads.strikinglycdn.com/files/23ffd063-6ab2-4cb2-9290-6c8f2629cd53/2360053605.pdf
    • https://s3.amazonaws.com/gurafoga/seismic_waves_and_sources.pdf
    • https://s3.amazonaws.com/datarofapakil/loluvuj.pdf
    • https://uploads.strikinglycdn.com/files/5b1c212c-7f35-4661-9b30-1edda716b36d/27650235931.pdf
    • https://s3.amazonaws.com/pevuwarobuvowa/jinoxalama.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_off0000b57b.bin
2b4f31736cb200e3e60a4822ecb297faa8b77784dfff4281dbab7aba9cd3e2f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB57B 5324 bytes
font_01_sfnt_off0000c784.bin
1a11a8c23c41a90f566f9a2105d80f40e740930cc9760cc21b64c337ef2c5b96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC784 9716 bytes

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