Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98e4ec009fcec19…

MALICIOUS

PDF

89.7 KB Created: 2021-09-05 18:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 969988ce6746d2acc8908eefa9792f19 SHA-1: 0ce15ad5fa9cd190b76b3a152b034024b6270e9d SHA-256: c98e4ec009fcec19110464892c889f5474fc0ae990e25d1c8e4af77f9fb16901
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, some of which appear to be compromised CMS uploads. The primary purpose seems to be directing users to external sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://italianopizzeria-pg.com/uploads/files/72316371297.pdf In PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/sofuwumabefipekemunojed.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/b2d29c9f7b4e601ae1559d8b82b315c7/31505866159.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609747870328e---dapasekowupirafefarajo.pdfIn PDF document text
    • http://weifong.tw/fckimages/file/boxuwaduli.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/jto2ha1svo7eq3bc0t247cdvp1/68322494688.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/8e2a835eda7392179598ee649bb40cb4/wasazeso.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884a82c26f0---kajerojijufurawikud.pdfIn PDF document text
    • https://suadienlanhhanoi.net/upload/files/74460643955.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/d17lgmmilm8nsh52t0laq150hg/maxawipevibod.pdfIn PDF document text
    • http://www.romanschatztruhe.de/img/files/8868851994.pdfIn PDF document text
    • https://chornakorn-packing.com/ckfinder/userfiles/files/pisusulikemipaxuwesap.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/4bd19059c1d9811b6a92595b0fb57ecf/salurikokiwipan.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/50461488303.pdfIn PDF document text
    • http://orthocarecentroortopedico.it/userfiles/files/57180544859.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/6i09ocpe2bi3vcme7fm36mjiva/zutedipem.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/kewugen.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/a5fd4be0c1a06d095694705d040d3d9d/tivipemoz.pdfIn PDF document text
    • http://azizolace.cz/images/file/jubolipegexuse.pdfIn PDF document text
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/mujtfjhn29c9uvs7mrq1hjsp02/22823395122.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/guzubefijetuxewu.pdfIn PDF document text
    • http://dnepropress.net/files/file/xatiwuzozufupirulakugovis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=%D9%85%D9%84%D9%81+%D8%A7%D9%84%D8%A7%D9%86%D8%AC%D8%A7%D8%B2+%D9%84%D9%84%D9%85%D8%B9%D9%84%D9%85+pdfPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000f875.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF875 25188 bytes
SHA-256: 43198294f5f1cfcd1723be8918874c6bcd8ca04ce44b56a33c083823d26cc287
font_00_sfnt_off0000c767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC767 19012 bytes
SHA-256: f7269f05b73551464fd99b8feb6bae1419d14447e4092a46fa596165f9b3018c
font_02_sfnt_off000125d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D7 9372 bytes
SHA-256: ab692011bb810b4091e5b6863c1468cc19624005727076e0e42723678ec61724
font_03_sfnt_off000139ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139BA 18256 bytes
SHA-256: 53317351eaf2ef2ec63bacc95571fc97e0d78ac5a8820505150a7a1beb27e49b

Open this report in the interactive analyzer, or submit your own file for analysis.