Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96da95f3e0d3a3f…

MALICIOUS

PDF

68.2 KB Created: 2020-11-23 18:45:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4112b0767fc472f3ff2518f820ef2289 SHA-1: ee28969ad0129e90acc59964c11656dadf383554 SHA-256: b96da95f3e0d3a3f3d9a00bcbead90feda6f999a1a2d92da3ec3ab9d931b063b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to 'trafffi.ru', which is flagged as suspicious. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware delivery. The document body, though heavily obfuscated, contains text related to 'Atlantic terminal mall open', suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=atlantic+terminal+mall+open PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f8af67211c4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380228/normal_5f907ba33046b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468553/normal_5faad1e900515.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b352c4-23f1-4037-8b97-e6ff009ae8f8/dizipiju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdea096f-7f19-4dce-868a-057afba175e1/the_axe_of_sundering.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bb8ec7e-02f2-4a26-b31a-fa061515db79/uttrakhand_govt_jobs_2018_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/sutefaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4c1c03-2bf5-4371-bd93-07fedd83be65/79321789545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c1768c-9753-425e-bdfe-d57e00ad3cfe/robert_lang_origami.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/android_convert_bitmap_to_jpeg.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/class_in_python_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98b69651-57e6-4f7f-a1c9-ab807622b29b/nixuzesawo.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/the_bookseller_of_kabul.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_off0000ccd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD8 4892 bytes
SHA-256: 3010c99185b17f655b48ab63de38086f9af989d1c749d16b31acdab6d333bf71
font_01_sfnt_off0000dd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD62 11544 bytes
SHA-256: 4080c4ec2f1b9f2f714e43ebe39ee1b85bdacc9cae7cb2278636b91a529beb7c