Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e72c2386a5688fa…

MALICIOUS

PDF

72.5 KB Created: 2021-02-14 05:30:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fd9a0e54266ac9928511b095aad76007 SHA-1: 23bb5220cbbf51269bc4fdd9b29f3afdb0042b64 SHA-256: 9e72c2386a5688fa7f6ebfea348f4607c1a6266e7e2d0e474b6170107d6af391
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=mallory+grossman+instagram PDF link annotation
    • https://cdn.sqhk.co/fadejiweruw/hiiahgB/imdb_vikings_parents_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/hgjp9gf/63229772575.pdfIn PDF document text
    • http://tasefuvakol.22web.org/checkmarx_plugin_for_intellij.pdfIn PDF document text
    • https://cdn.sqhk.co/doxurozupu/ijidWja/ps4_remote_play_windows_8_64_bit_download.pdfIn PDF document text
    • https://xebuzoxovekig.weebly.com/uploads/1/3/4/0/134018553/3361770.pdfIn PDF document text
    • https://lizelizana.weebly.com/uploads/1/3/1/4/131409616/3357014.pdfIn PDF document text
    • https://duresanu.weebly.com/uploads/1/3/5/3/135334900/lavoren.pdfIn PDF document text
    • http://mafuditovu.iblogger.org/tikezogopiruru.pdfIn PDF document text
    • https://cdn.sqhk.co/mojafefegamo/jghbJDJ/jeppesen_pilot_logbook_excel.pdfIn PDF document text
    • https://dawejufajipamoz.weebly.com/uploads/1/3/5/3/135350304/bc1bd9d3e.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/g3Rjb8a/75330018210.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/material_requisition_form_excel_template.pdfIn PDF document text
    • https://vutakajar.weebly.com/uploads/1/3/4/8/134896426/xonozuretenelemiw.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/semuxemakaw/unlock_bootloader_sony_xperia_x_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/bases_de_dados.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/barfi_song_itti_si_hansi.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/jiwijizunumegogeferigug.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/boss_engira_baskaran_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/58881584723.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_off0000dff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF8 5112 bytes
SHA-256: a315daa1f8860a3ab92a9355cc6ac1a4469a9648f054e33ab6cc79cf6f8ec5a5
font_01_sfnt_off0000f15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15D 10416 bytes
SHA-256: 4e046d11623f15669e1024bcb70efdaa4049d502ee1c9a6e87f04cfe49b77315

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