Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14c93f5802c8a1a…

MALICIOUS

PDF

82.6 KB Created: 2021-01-01 06:00:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8c8e16f0a64bb945ef96310a81cf3341 SHA-1: 99f21c10470b299926cbef701c5aa20ee42f702f SHA-256: f14c93f5802c8a1ac1cb1a7b3ad38e19aaa66b7660b62468a6eb4e7348dc0433
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detected it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to telescopes. The presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/123?utm_term=what+does+a+non-optical+telescope+do PDF link annotation
    • https://moviwinexanasi.weebly.com/uploads/1/3/4/3/134314602/e7105e.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/diwepubik-mifurekuf.pdfIn PDF document text
    • https://labopepiw.weebly.com/uploads/1/3/4/7/134747507/3e04842c.pdfIn PDF document text
    • https://cdn.sqhk.co/lanasido/jibijgj/pong_video_game_original.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/juzowilipi/605327203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1e63a7f-f4b1-4eea-a2dc-677a2e1a9935/72610951437.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/zeriwufutebefikekodane.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/jitejigejipakel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5af3b1a-6d5e-4c89-9069-b7a8b015cd45/bigotujugaweduburukolez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/733ec650-45f9-42bf-8c99-6c478f02bd00/61837601320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2d3a93f-e7ad-4bb7-8e15-eecf91063dee/moentrol_trim_kit_bronze.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/mens_thong_swimwear_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/yoshino_s_blackstone_fresno.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_off00010144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10144 5112 bytes
SHA-256: 0ad28d90f955d4fbe5c9907efdf69fdc3e47b31739f04aa5bd08cce4eb3a5e7b
font_01_sfnt_off000112be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BE 12344 bytes
SHA-256: 3b87172f8f1b8a75288dd05f1a0b08b7c598f4b69e8429d696efa80bd2f0f7ed