Malicious PDF — malware analysis report

Static analysis result for SHA-256 4012b412ee706d02…

MALICIOUS

PDF

73.8 KB Created: 2020-12-19 14:46:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a08f300ea63aca620f6c52160ed3e455 SHA-1: 73552e8f83b79d2a7fa70e7cba4d631873a9e51f SHA-256: 4012b412ee706d025ab61ccbe3c2aab84839e3f890faa63ee01d41d8ce728024
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to search terms, reinforcing the lure. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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://trafffi.ru/aws?utm_term=best+cheap+android+phone+2019+malaysia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377401/normal_5fab9e492f134.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465392/normal_5fad3207c4d25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407989/normal_5fdafe736e909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479454/normal_5faffc75b8af4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415070/normal_5f99cd358c1f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423189/normal_5fd998fb79e5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5faa44c4702b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422134/normal_5f998d79de9c0.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/rekawexuretowo/suwokolararaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d976a090-3b9a-4940-97a4-5e3c40c8c828/transcultural_concepts_in_nursing_care.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/panasonic_dmp_bd65_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/greenleaf_season_3_episode_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7e5187-5a1e-4d15-bb0c-682c7bfec699/zepozoduzidetinafozoga.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd379fff074777c983261b/t/5fdde49d51a86c1b6c14b353/1608377502821/big_tymers_1_stunna.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/blueprint_example.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/85520017057.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_off0000df11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF11 5948 bytes
SHA-256: ae1c77221af7e9d610473f65b775af0862e9ff277a6ecf41eb5a4c291c5a5939
font_01_sfnt_off0000f331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF331 11544 bytes
SHA-256: 24ef666450013b2464ba181a14e6751852765cb95ef33707014e3270c364e9cc

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