Malicious PDF — malware analysis report

Static analysis result for SHA-256 e18ddf66dc4d6fde…

MALICIOUS

PDF

70.3 KB Created: 2021-02-14 02:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 9241419a994adeb0e181e63c9092280f SHA-1: 5a8632feff7e1e3ddbb64a0c11a5d0a4f25d4bfb SHA-256: e18ddf66dc4d6fde962fc877d96171c9902aa9c90ccf84fb2c45da2122a42ea0
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and the document body text is crafted to appear as search results, specifically for 'Bryce canyon sunset campground reviews'. One of the extracted URLs, 'http://help-ruleviolation.com/tofedea2h8f.pdf', is highly suspicious and likely serves as a malicious payload or redirect. The ML classifier and ClamAV detection strongly indicate 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://seumenha.ru/123?utm_term=bryce+canyon+sunset+campground+reviews PDF link annotation
    • http://help-ruleviolation.com/tofedea2h8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473919/normal_5ffb6b53c303c.pdfIn PDF document text
    • http://adminhalil.com/asteroid_destroy_asteroids_and_alien_invaders_fanfictionxndv5.pdfIn PDF document text
    • http://emirofficialzm.com/gogifutivivofuvo3i6dx.pdfIn PDF document text
    • http://nadahul.ru/life_cycle_of_a_plant_ks2_worksheet4j5pp.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/tumuzu/android_layout_background_color_gradient.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/hallelujah_malayalam_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/xedovepun.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/33996485954.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/have_got_exercises_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/82706400170.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/72717571931.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/networking_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/19653240939.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/baby_bjorn_miracle_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/83755053091.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/lamokomugawabimidox.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/45502592124.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_off0000d3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D3 5664 bytes
SHA-256: ad599feaeb2e5d0487f436902b4a2175e16f300c89c7c8380f5491f3953f93a2
font_01_sfnt_off0000e723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE723 11028 bytes
SHA-256: 5ae5cbc94412a96393722c106fcd6c30b4901e89fb83a580e9b80b64a11055fa

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