Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d629df7539f90eb…

MALICIOUS

PDF

63.8 KB Created: 2021-02-21 13:37:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fb00a1dbb6311dac6f80f541e47eb047 SHA-1: 65a9a2bec97280ca6d18a569f1a92fda20012d10 SHA-256: 2d629df7539f90ebd53ca0f12a9b45a4db6146cd96a5fb1dbf6f2991f9c6b0e5
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://druttle.ru/wix?keyword=minecraft+tower+defence+2+hacked+unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447641/normal_5fe515c4ee62b.pdfIn PDF document text
    • https://xukunuwemixul.weebly.com/uploads/1/3/1/3/131384589/4f503f8a8e17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474985/normal_600267579b0a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jamudux.epizy.com/54133259591.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/mb10f_bridge_rectifier_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/dodubofexemerenovuluk.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/clock_without_hands_template.pdfIn PDF document text
    • http://zotoputoxo.rf.gd/ave_maria_caccini_violin.pdfIn PDF document text
    • http://foxabivezafese.rf.gd/elements_of_statistical_learning_online.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/happy_new_year_kannada_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/1696741756.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/name_change_affidavit_format_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/berlitz_spanish_book.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/justin_bieber_songs_pagalworld_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/facebook_lite_for_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/porusatarajurusadirexus.pdfIn PDF document text
    • http://lumuwejonalar.epizy.com/cours_brassage_bire.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_off0000be7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE7A 5364 bytes
SHA-256: a544927128d1f15bcbdacd73f1de2c226192baacb936594cacfbcd88fdfa7853
font_01_sfnt_off0000d0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D7 9764 bytes
SHA-256: 6b95f9e054c385ce74d9f14e214ad3329ff506d390134ad884a6a85ef55f199c

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