Malicious PDF — malware analysis report

Static analysis result for SHA-256 26e4a47cb395f574…

MALICIOUS

PDF

72.9 KB Created: 2021-02-22 01:54:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: a96ce0f74481eb0f4ace41512be41b14 SHA-1: 769fe8c77a5b444e1089a846fa4d7555b7ca7198 SHA-256: 26e4a47cb395f5748588a59c85f856bc739e85d484798311131f5aae5642bfaa
154 Risk Score

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 'https://yafferge.ru/strik'. Additionally, ML classification and ClamAV detection strongly indicate malicious intent. The embedded URL is likely used to lure the user to a phishing or malware download site.

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://yafferge.ru/strik?utm_term=what+does+citra+hops+taste+like In PDF document text
    • http://maska-respirator.shop/dhoom_2_full_movie_hd_1080p_download_123mkv3st5o.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/HCwia59/all_social_media_app_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/j44gha1/37860278458.pdfIn PDF document text
    • https://cdn.sqhk.co/madumubo/ijs0lLD/51163671249.pdfIn PDF document text
    • http://vizit.store/call_of_duty_warzone_update_not_workinggfij0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/66604373629.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/73653382512.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/gukudanov.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/informacin_de_mala_calidad_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/how_long_do_proform_treadmills_last.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/90903590952.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/nejovetomivemalirigesog.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F5 4920 bytes
SHA-256: 617bade92fba93e0233594a5d62c57b892dbb31a7a861cc616bbdb2ad177c394
font_01_sfnt_off0000e1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D0 11416 bytes
SHA-256: 2d6d5f2f4d5200e5df46fdb4032cbaa12d2ce2797db6fb81a5321e389bd00f40
font_02_sfnt_off00010844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10844 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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