Malicious PDF — malware analysis report

Static analysis result for SHA-256 b90a789909be6a62…

MALICIOUS

PDF

79.8 KB Created: 2021-01-14 22:46:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bc7f468a1a3aeb35b7a6dbf4eff8c37a SHA-1: 2b8ef9b24ab1422a66e6959e3fd656fb37a9b46f SHA-256: b90a789909be6a62a722ca7547bb5e41ac5300d96d4b8fabd4a02bc7f1f1830c
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, https://gettraff.ru/aws?utm_term=p+n+b+e+ka+full+form, is the primary indicator of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://gettraff.ru/aws?utm_term=p+n+b+e+ka+full+form In PDF document text
    • https://site-1177800.mozfiles.com/files/1177800/91022078340.pdfIn PDF document text
    • https://cdn.sqhk.co/niturunajik/RwjhkCp/zain_bill_payment_check.pdfIn PDF document text
    • https://site-1168260.mozfiles.com/files/1168260/sad_anime_couple_wallpaper_hd.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/panalipolifod/gidezafas.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/wefalojoramudepuze.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/burano_tourist_information.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/kebivojedurowiwap.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/fuel_tank_toolbox_combo_with_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/wofapegodegodiwerizonizis.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/gta_v_free_download_android_apk.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_off000100d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D3 4940 bytes
SHA-256: e7d944da9938d55cc8120b0ea0463da77826742b37a18757715effdfccffaa4e
font_01_sfnt_off0001118f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118F 10024 bytes
SHA-256: a9ce23ecae7f31b6cef86fee4c18ca97989c4f80a07dc767f27cb961b1f4ec89