Malicious PDF — malware analysis report

Static analysis result for SHA-256 8821c96abc9d3d73…

MALICIOUS

PDF

75.6 KB Created: 2021-03-02 09:50:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2833416160aef3c14b422cffef254fd1 SHA-1: 7e562b592b1e385704fb57bb87c68ad9f7ae9549 SHA-256: 8821c96abc9d3d7309713a6800b265963c307de0bb86a6ed5f0e93cb2fba3d78
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a malicious website, likely for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall detection profile suggest the document is designed to exploit users by redirecting them to potentially harmful content.

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://mezovuduw.ru/wix?keyword=microscope+mania+word+search+key
    • http://fringigejy.site/7104744004k0xz0.pdf
    • http://ca-manalapan.space/curso_de_ingles_nivel_intermediowp1yw.pdf
    • https://fujareke.weebly.com/uploads/1/3/5/3/135391043/3986953.pdf
    • https://teduraxiwerul.weebly.com/uploads/1/3/2/6/132681384/1887109.pdf
    • https://cdn.sqhk.co/dodiniwotud/LifTidw/cool_math_games_red_ball_2_volume_3.pdf
    • https://cdn.sqhk.co/wekaradukuve/fgdvgfj/16395832275.pdf
    • https://midejewafefo.weebly.com/uploads/1/3/4/0/134000268/80f0f82a3db.pdf
    • https://cdn-cms.f-static.net/uploads/4449769/normal_5fd1c8a800d0d.pdf
    • https://zoxusikajikad.weebly.com/uploads/1/3/4/8/134851315/kuzepirarosiwoboj.pdf
    • https://cdn.sqhk.co/nexuliwadi/S4wjshf/last_day_on_earth_survival_ios_gameplay.pdf
    • https://livupojinobiz.weebly.com/uploads/1/3/1/8/131856358/a96ec.pdf
    • https://cdn.sqhk.co/valujoper/cDxLYjd/birabiduwibo.pdf
    • http://helper-badges.com/how_to_use_a_dab_radioo6c96.pdf
    • http://solhq.xyz/790666628337f1rp.pdf
    • https://cdn-cms.f-static.net/uploads/4377128/normal_602a19256db9d.pdf
    • http://vorgazme.com/20762052087cgqvg.pdf
    • https://static.s123-cdn-static.com/uploads/4377410/normal_5fe30234c0c0d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zunaduxa/jarenixabaronufedoxida.pdf
    • https://s3.amazonaws.com/jaloto/gesobib.pdf
    • https://s3.amazonaws.com/widiku/camera2_api_apk.pdf
    • https://s3.amazonaws.com/gozifep/oxford_read_and_discover_level_4.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_off0000ea6c.bin
0e46dc9c1b553621d2d7428fc1832a041f307e7412fdffb723d06bb08e32f0e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6C 5544 bytes
font_01_sfnt_off0000fd3a.bin
a6e0e00980b6de8d1fbc291be9870948f7627966229c73a8fea4c64c86c0c1fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3A 10620 bytes