Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa4587a93d94268…

MALICIOUS

PDF

70.3 KB Created: 2020-12-18 07:15:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ae22b35b3ea8dce47c813cc070ca7e0d SHA-1: 3f92f0e4509c91048e8e676a37bb52dec71b6e7c SHA-256: 4fa4587a93d94268bccf9e0432e80d43fe1a2e4a0684456fea4832f71aa30b44
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This URL is likely used to redirect the user to a malicious site for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=osrs+f2p+armor+guide In PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/0adff3bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416144/normal_5f9d118d4297d.pdfIn PDF document text
    • https://suvewuvasalu.weebly.com/uploads/1/3/4/7/134762181/garemanikax-xexaliriros-gafas-kigonuxigo.pdfIn PDF document text
    • https://wawotixivawipi.weebly.com/uploads/1/3/4/4/134474061/kuwozovubekuluk-sawepemumogun-badowusowere.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/lorugipopuxe/analytic_geometry_family_of_circles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/087fa596-7c8c-4c2d-9845-3527efab7013/62592469580.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc194132cf09257bd70d589/t/5fc3973208845d0924f82f59/1606653749426/romeo_and_juliet_act_1_worksheets.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65fa411f6a41984ab0936/t/5fd19583b91f50015ee83e0f/1607570819695/44879226926.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/bonetafoxomazokif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77deeb2f-cafb-4c19-8dd7-f4fcd882e05b/josepufogotonidugax.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/assamese_song_2018_new_asomi._in.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_off0000d102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD102 5488 bytes
SHA-256: 1cc118bc66239e53ebf4ef1abb0536954bfd516bf755353376d981a4183f1e83
font_01_sfnt_off0000e398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE398 12372 bytes
SHA-256: c1b7dadf4cb197215ec480d9a5c78c504a1a159d50e1a317177afb60508d2487

Open this report in the interactive analyzer, or submit your own file for analysis.