Malicious PDF — malware analysis report

Static analysis result for SHA-256 419b3e8acbf3de46…

MALICIOUS

PDF

86.5 KB Created: 2021-07-22 10:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 836da4e0641d84a5943fab9387b619be SHA-1: d8a700c5e7bcdbebbbddb6d9f171aaa8e79c5756 SHA-256: 419b3e8acbf3de46389784f35d691b4b35adabf5a18a3b50b7e21db8741b99d5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://autowagon.it/userfiles/files/mexesevixepaxofosifijax.pdf In PDF document text
    • http://air-ned.com/uploads/files/dizunakiwiwajuvozunajif.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/4286ac597006549272cbdc12a398f328/tabitavufodakope.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160989c04dc08b---zoduwenagedakuler.pdfIn PDF document text
    • http://arcadia1973reunion.com/clients/3/33/33cb7023d77084166ed027ca16b579b7/File/dijukarujizazivuxikok.pdfIn PDF document text
    • http://aodaiminhhanh.com/app/webroot/uploads/files/36501018360.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5f881bdda9---10881927751.pdfIn PDF document text
    • https://nestaerospace.com/uploads/file/14411041811.pdfIn PDF document text
    • http://aweibel.com/Photo/file/mepunadovovunaw.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f505ee6864f---64272908057.pdfIn PDF document text
    • https://kheops-so.fr/ckfinder/userfiles/files/15508823471.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608afc87f308b---82036395223.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/nogox.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16079b7ea0f6c2---tiwuxejox.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/34074482745.pdfIn PDF document text
    • http://darec.sk/files/files/49304541728.pdfIn PDF document text
    • https://aedwea.com/upload/foto/51475040798.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092e4860b091---zixogaxezubirodade.pdfIn PDF document text
    • http://abpaluso.com/upload/file/49797904782.pdfIn PDF document text
    • http://ristorantebiscione.com/userfiles/files/jeperamidezarisagil.pdfIn PDF document text
    • http://pantanalmsnews.com.br/ckfinder/userfiles/files/figokapemopuvo.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16077d974aad9b---61968313240.pdfIn PDF document text
    • https://www.akilciilacdernegi.com/ckfinder/userfiles/files/sipesomabukapu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=introduce+yourself+samplePDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2D 10856 bytes
SHA-256: 025e4e1d245a1d4a9cf08b7b81d6ba22fef923fec67035487bd281bd8836f5f4
font_01_sfnt_off0001074e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074E 16836 bytes
SHA-256: abb64b010b96eb0efec49500348477d38536eb59b70f2e146ff5609ee59f05ba
font_02_sfnt_off000132f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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