Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59c18de43160945…

MALICIOUS

PDF

73.0 KB Created: 2021-02-10 18:41:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a848598fed959a595959c5d4675965aa SHA-1: cd92712873c632a4226be85846b6e7b6e3fa6ec8 SHA-256: d59c18de43160945bbe7578a743748564cb101b11669b63453783aa067861285
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for a Norton brand impersonation lure. The embedded links, such as https://yafferge.ru/123?utm_term=iliad+discussion+questions and https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/nitegax_tifigujurevaj.pdf, point to redirectors and potentially malicious content. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed for phishing or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/nitegax_tifigujurevaj.pdf.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=iliad+discussion+questions In PDF document text
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/nitegax_tifigujurevaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408197/normal_5fe467b8905fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_6012950919468.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/gFgjWX0/botajufolitinalujowu.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/hcykig6/teenage_mutant_ninja_turtles_movie_super_shredder.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/48930891778amh4u.pdfIn PDF document text
    • http://big-ita.space/free_spanish_greetings_worksheetgvc59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369189/normal_5ff22e21a8fdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387036/normal_5fe2ba3030254.pdfIn PDF document text
    • https://rikedinodewo.weebly.com/uploads/1/3/5/3/135323941/xizekawinibaza.pdfIn PDF document text
    • http://gravkamen.ru/bosatijejewo9a7q4.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/xonaxevetaf/redip.pdfIn PDF document text
    • http://laxuraxosolun.epizy.com/online_receipt_voucher_format.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/vw_app_connect_android_version.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/33315694852.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/kedodasutoni.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_off0000d3dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DC 4780 bytes
SHA-256: 15be23ce6f58c2f460105da023b62912ba4a32478b838f8d74af4de938baf1df
font_01_sfnt_off0000e41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41C 10272 bytes
SHA-256: 770afe8f01c9dd0490c864000a5ceb1a7b7be0861930b956a59449e7275b583d
font_02_sfnt_off00010754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10754 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2