Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e4595b8a145a81…

MALICIOUS

PDF

72.0 KB Created: 2021-02-18 01:44:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 961c9e9350b8122800ecdb920e84a898 SHA-1: ba34ee30350344f67ac3ed884e335057725a5a6c SHA-256: 71e4595b8a145a819d7013d0a7bdbb47f12314954600296504a7967a9125a6cf
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=lego+battles+ninjago+all+cheat+codes PDF link annotation
    • http://bestunew.xyz/dorazuvexupi0174w.pdfIn PDF document text
    • http://getsol.xyz/773586859299wnsf.pdfIn PDF document text
    • https://kajuzenutojaso.weebly.com/uploads/1/3/4/6/134631714/xofibivelojuvo_mojujawusopot_tuvekapu_zesixepubobiru.pdfIn PDF document text
    • http://sisaratu.iblogger.org/duwiguxowafapidofarak.pdfIn PDF document text
    • http://iblack.space/pexitowavelizemugowajokivjrlr7.pdfIn PDF document text
    • https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/0436d835906.pdfIn PDF document text
    • https://gitumakiwu.weebly.com/uploads/1/3/1/4/131437138/2cc43ab2.pdfIn PDF document text
    • http://busurman.space/rapport_de_stage_3eme_opticiengbqub.pdfIn PDF document text
    • http://myyshooop227.site/makawobuwezonijeriqdilg.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/nasitevu/coach_carter_movie_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/nuriwifukomonaba.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/77412734639.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/xigapupim.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/what_does_the_public_in_public_relations_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/26302147349.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/cafe_menu_template_for_pages.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/i_am_awesome_wallpaper_hd.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_off0000dabd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABD 5260 bytes
SHA-256: 7892b0b6bc55b6bb0a0fbe43ffd786939c3d1cc8c67ecf72e9ec375c6be363d8
font_01_sfnt_off0000eca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA9 11980 bytes
SHA-256: 189b71c067dae853f0aeb057335a92fd32ca449f9804836a740bd0f377c4f7b1