Malicious PDF — malware analysis report

Static analysis result for SHA-256 8972ee0d164ef230…

MALICIOUS

PDF

77.3 KB Created: 2021-02-23 19:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 79ff9a4808792a16ae50995ba02e1cf7 SHA-1: 6fd77b5c036e31e39d59195ac0cc2d206c1cd724 SHA-256: 8972ee0d164ef230a4be58ffdb3cf69ba38470aefeea9f195dbd23c6a239432f
136 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and an ML classifier indicated a high probability of maliciousness. A high-severity heuristic identified an image lure linking to an SEO redirector, specifically 'https://jottigo.ru/strik?utm_term=apc+br1500g+warranty', which is characteristic of phishing campaigns attempting to trick users into downloading malware under the guise of legitimate content like warranty information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jottigo.ru/strik?utm_term=apc+br1500g+warranty PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425916/normal_5fd0a0ed88df0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418973/normal_5ff63a027c591.pdfIn PDF document text
    • http://item-get.top/managerial_accounting_mcgraw_hilla4jtb.pdfIn PDF document text
    • http://phillipen.online/wamuxiwuwacvg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369310/normal_5ffc4dd312272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450047/normal_5fd613c6b7ed1.pdfIn PDF document text
    • http://helpcontactform.com/miwabulolejagetinenr2puo.pdfIn PDF document text
    • http://whitetwo.space/48304896086a8tr2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365627/normal_5ff37ff7b82c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417652/normal_5fe599ee016dc.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/rerinago/zipekikujiwefaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/splash_screen_in_xamarin_forms_android.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/simevudekafawufekemimo.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/latest_messenger_apk_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/jiwusuzuwibese.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/spreadsheet_in_excel_icon.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/woxinagab.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_off0000effb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFB 5532 bytes
SHA-256: 168074946990b5320878be00575ee227f545ff225fb6e27072a7c53ea6d77369
font_01_sfnt_off00010304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10304 10408 bytes
SHA-256: 7c16b36a0b9398c6b4c352bd010de64b65d332e68c3c65080abd1ac713cdc9b2