Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2d2a877485cd48…

MALICIOUS

PDF

80.9 KB Created: 2021-02-25 01:51:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ab954e7e50143acd1ab746c6e71ddf4c SHA-1: 044b82ffb8bf0a36d060c53e50fda97b431e97c0 SHA-256: 7a2d2a877485cd48407d66cd6c9f68999eb98edb3c9c8e5dddfd709bf9878706
196 Risk Score

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=founding+brothers+ellis+pdf PDF link annotation
    • http://storedubai.shop/93367620210ap9l5.pdfIn PDF document text
    • http://winoraama.site/shelter_from_the_storm_lyrics_chordst4mf1.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/83724734818.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/jbigCha/67182518803.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/norcold_refrigerator_replacement_chart.pdfIn PDF document text
    • https://polatubogo.weebly.com/uploads/1/3/4/5/134598163/fotibezotezupovibu.pdfIn PDF document text
    • http://gipilunafa.iblogger.org/wekukadufofet.pdfIn PDF document text
    • https://mugijimefulex.weebly.com/uploads/1/3/1/6/131606494/1816457.pdfIn PDF document text
    • https://cdn.sqhk.co/zilidadakole/gdifjf1/43094590903.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/dutimajizowa/matuziwisafifuwerifino.pdfIn PDF document text
    • http://jabaxuzadowepep.rf.gd/weather_report_for_gaylord_mi.pdfIn PDF document text
    • https://s3.amazonaws.com/popilo/62809707324.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/3193419390.pdfIn PDF document text
    • http://zoribele.epizy.com/weekly_plan_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/nutritional_information_burger_king_small_fries.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_off0001031b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031B 5188 bytes
SHA-256: 3860f4ced3cc50cb36c6179e1f5888ab30412dd75f7eaf3830e29a523a0c32c1
font_01_sfnt_off000114bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BB 10000 bytes
SHA-256: 6d137d1a9c751815b4f433c16fd88cac270498e6b457c0a34cfb9716ce81333d