Malicious PDF — malware analysis report

Static analysis result for SHA-256 648574fa742a3d9c…

MALICIOUS

PDF

90.1 KB Created: 2021-02-22 21:05:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 123fb27faeff706f7e4c81be4f65ecb2 SHA-1: 5abeb8c21e214519ccdeb51d94bc214516ad5be6 SHA-256: 648574fa742a3d9cb3b10e884e7edb78adeaddde2d68c7c96114c975110b9c88
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

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://maypoin.ru/strik?utm_term=sony+str+dg720+protect+mode PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366668/normal_5fde8b0e58c90.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/hehbkfC/xibiluxafitikagi.pdfIn PDF document text
    • http://wowosuseje.22web.org/format_surat_permohonan_pencairan_dana_desa_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/tudusiki/hdCIjaK/kiwisozina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404500/normal_602bde44dd548.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/T104Sia/runescape_wiki_archaeology.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417403/normal_6006adc710b7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_5fd61314179d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375885/normal_5feb9b1935e7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390329/normal_5fddca3f33f5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_6013a6831e6d7.pdfIn PDF document text
    • https://cdn.sqhk.co/silinetufid/cibjgMB/maxipejakufibisujapof.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/vawoginele/beyonce_formation_gucci_dress.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/xadedudenonebores.pdfIn PDF document text
    • http://nerelikeg.epizy.com/geometry_workbook_answers_mcgraw-_hill.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/24514113326.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/kolonisten_van_catan_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/karate_kid_movie_songs_free.pdfIn PDF document text
    • http://nedomawof.rf.gd/powerpoint_poster_templates_36x24.pdfIn PDF document text
    • http://zunotewa.rf.gd/zevuxovanofedutosere.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/97554651435.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/free_curriculum_vitae_template_nz.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_off00011ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC3 5708 bytes
SHA-256: 3bec01f0337e3a64a5f377b244591deae5f157dfc48b2f706455e7641936469b
font_01_sfnt_off0001323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1323B 12296 bytes
SHA-256: 3f376a695c724fcb4c8c1ba75770ca1239caf352b0deea5984422ebaec6227a2

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