Malicious PDF — malware analysis report

Static analysis result for SHA-256 c750e09a118bb89d…

MALICIOUS

PDF

69.2 KB Created: 2021-09-26 03:20:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e95170219b2e25c9f17b594ffcb4f775 SHA-1: 65ca6ce7c1f57d4118b90d65ec8368fc1dd018bf SHA-256: c750e09a118bb89d8bc02f4243c76ea185649170fc05b6df91c0ebe7a6b26595
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM indicate a pattern of using link farms on potentially malicious infrastructure. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=hitman+absolution+download+apk PDF link annotation
    • http://kadh.kr/bobod/upload/file/8736925325.pdfIn PDF document text
    • http://lejuriste.ru/files/file/37778890545.pdfIn PDF document text
    • http://tsg-vaganovskoe.ru/ckfinder/userfiles/files/56910022975.pdfIn PDF document text
    • https://m-audio.vn/img-m-audio/files/disudikevitipenes.pdfIn PDF document text
    • http://americasbestwingspa.iorderfoods.com/uploads/files/36872959154.pdfIn PDF document text
    • https://linlinline.biz/js/ckfinder/userfiles/files/lipux.pdfIn PDF document text
    • http://bjerkelunden.org/content/files/userfiles/file///56317119035.pdfIn PDF document text
    • https://cmflower-kkc.com/ckfinder/userfiles/files/xufixejoxof.pdfIn PDF document text
    • http://neoneofytou.com/ckfinder/userfiles/files/pizubi.pdfIn PDF document text
    • http://noahmission.org/dataroom/file/rosijimovevefewoti.pdfIn PDF document text
    • https://podiummagazinenews.com/ckfinder/userfiles/files/femajovibapadadukij.pdfIn PDF document text
    • https://baptistfriends.org/media/tasajugusodimirekirix.pdfIn PDF document text
    • http://printrun.nl/userfiles/files/96047015480.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16130021b9b0d7---vusaxuruwiwa.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1612eec73bd9e1---taminubukewama.pdfIn PDF document text
    • http://westfallassociates.com/documents/file/vuxupura.pdfIn PDF document text
    • http://tchid.net/userfiles/file/90727933717.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/9a371caad4fd9cca45faec0afc0dcc4e/saner.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16131515f9ee44---jufifazifeforaxilonun.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140763db728e---90212186201.pdfIn PDF document text
    • https://toocapen.com/files/86094072506.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614ad236111b5---jazobirubar.pdfIn PDF document text
    • https://kompaspt1.com/contents/files/39665242031.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/6f1df83828fb6c408bf7a09de33d80cf/38260984608.pdfIn PDF document text
    • https://cartolmania.it/file/kimetuf.pdfIn PDF document text
    • http://www.azurwelcomeservices.com/userfiles/file/lubuvijasun.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://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_off0000b22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB22B 14844 bytes
SHA-256: 52f6a868a10c36a131f69106580472ab462fe9803a73df6044c1e21206873806
font_01_sfnt_off0000d70c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD70C 10728 bytes
SHA-256: 9dea29d0c0b4388ce2933a44a0b32b3bfb5463d860129791591aecccecccf415
font_02_sfnt_off0000ef71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF71 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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