Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c91deb365b68301…

MALICIOUS

PDF

72.2 KB Created: 2021-02-19 04:38:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 514b50c13ae3c46783b9c6e1f39df89f SHA-1: d256aa19e8f70c505ee79f4b25ab8da893ff4151 SHA-256: 7c91deb365b6830149faac29b42aca216eb90f6510afe605b9e3f8bf06475ba4
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 suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL and the overall classification suggest this PDF is designed to trick users into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=d%2526d+5e+coin+weight+calculator
    • http://reduslim-officialsite.site/superdry_japanese_writing_translationc9hfx.pdf
    • http://new-leggins.site/vtech_manager_herunterladenbrlsh.pdf
    • https://cdn-cms.f-static.net/uploads/4388177/normal_6010e31d73987.pdf
    • https://cdn.sqhk.co/raninogozo/imKaiie/toca_kitchen_2_free_no_download.pdf
    • https://cdn-cms.f-static.net/uploads/4370525/normal_60196c92bcf0e.pdf
    • https://cdn.sqhk.co/kuderoxuz/higuqcj/z_tune_body_kit_for_r34_gtr.pdf
    • https://static.s123-cdn-static.com/uploads/4458132/normal_6008d911988cc.pdf
    • https://static.s123-cdn-static.com/uploads/4464311/normal_60094d8d8e07c.pdf
    • https://cdn-cms.f-static.net/uploads/4390642/normal_601592be35e5e.pdf
    • https://cdn-cms.f-static.net/uploads/4443329/normal_602a788abb009.pdf
    • https://static.s123-cdn-static.com/uploads/4421205/normal_5ffff9303c8ea.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gizonukorad/wupesinogekuvutuminof.pdf
    • https://s3.amazonaws.com/fowikorejodi/facebook_status_video_saver.pdf
    • https://s3.amazonaws.com/febopa/luo_sda_hymnal.pdf
    • https://s3.amazonaws.com/waduzirader/tapini.pdf
    • https://s3.amazonaws.com/rorives/s._s._c_routine_2019.pdf
    • https://s3.amazonaws.com/makixibawumebol/samsung_android_phones_under_10000_in_india.pdf
    • https://s3.amazonaws.com/besafefaf/pdf_agama_islam_kelas_11.pdf
    • https://s3.amazonaws.com/fulosobezur/89344712927.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_off0000e26d.bin
58eabb24298f18ab3cb5c3f3a5652a185830994b36fd37cd9ad46fcf77495092
pdf-font-stream PDF embedded font (sfnt) at offset 0xE26D 4156 bytes
font_01_sfnt_off0000f09c.bin
80e4cb2dfee6cae6905f374f5b68d8b7849e76583bc47691e198233daf92a82c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF09C 10224 bytes