Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6fa64b9019ac01…

MALICIOUS

PDF

90.3 KB Created: 2021-09-19 01:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7bd5acd05dd1c702c4b6ec0b6feeaad9 SHA-1: 021900f113211063d2d552ea91d3ba4c14b61ea1 SHA-256: 8d6fa64b9019ac0130a5877edeb1a0c667c285cd14d9c27a7f18ae2f7a1994a0
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with a heuristic identifying it as a link farm on disposable hosting. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, potentially for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 4

  • 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://agro-pasz.pl/ckfinder/userfiles/files/91447948340.pdf In PDF document text
    • http://rancholasmonturaspremios.com/campannas/file/63885178863.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132717d99675---fizadepub.pdfIn PDF document text
    • http://heichapuzi.com/uploadfile/file/fukivusivomomokedazofix.pdfIn PDF document text
    • https://ssmahavidyalaya.org/lion/uploadedfiles/fck/files/file/92358691978.pdfIn PDF document text
    • http://thanhnhomdinhhinh.net/uploads/files/81201885295.pdfIn PDF document text
    • http://getrade.net/uploadfiles/file/sijetulaminefukitaz.pdfIn PDF document text
    • http://royalrep.com/userfiles/files/kixafuvemedar.pdfIn PDF document text
    • https://meganimal.pt/site/upload/file/2741641423.pdfIn PDF document text
    • http://harnettcountyhba.com/userfiles/file/bamonororalumo.pdfIn PDF document text
    • https://repetitorebi.ge/userfiles/files/68700158535.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/73960602385.pdfIn PDF document text
    • http://cayxaotamphan.net/userfiles/image/file/kiveg.pdfIn PDF document text
    • http://benrassam.com/uploads/files/wevetemigaxudabuwab.pdfIn PDF document text
    • http://justsayhi365.com/uploads/file/23286696941.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/bbf6abff97dfed7b7cb24f0284fdd80d/88498708478.pdfIn PDF document text
    • http://it-hair.com/userfiles/73564949733.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/57222036185.pdfIn PDF document text
    • https://magnanerie-cazilhac.com/userfiles/file/gufisunipetatuwe.pdfIn PDF document text
    • https://pui-vital.ro/msg_media/file/19257856183.pdfIn PDF document text
    • https://marblobath.com/app/webroot/img/files/42939696616.pdfIn PDF document text
    • http://studiotecnicomartani.eu/userfiles/files/dowuzabozuborubopixepimid.pdfIn PDF document text
    • http://presssimayeshahr.ir/pic/file/renig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=hes+all+that+movie+trailerPDF 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_off0000ffdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDB 17228 bytes
SHA-256: 8ae7abaf727c31ee964e4eb77421c2aab7ba242cf6b8e0bf4896a9f0f8094192
font_01_sfnt_off00012c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C96 10328 bytes
SHA-256: f0d1b156e2ff1b09e4843ac5cbffb52248690ce1f599b5994ecf4dc1db6f86ba
font_02_sfnt_off000143de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143DE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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