Malicious PDF — malware analysis report

Static analysis result for SHA-256 516fee6aa8ad2bdf…

MALICIOUS

PDF

84.7 KB Created: 2021-07-07 13:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 365256e3ea121a914be0104b784b2707 SHA-1: 921b19425f4824d993f1a5f55b87ff6cb4924924 SHA-256: 516fee6aa8ad2bdfb49f926111db1c5bed899a6ade969552b0cf86c42012485a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous embedded URLs that point to potentially compromised websites or disposable domains. These links are likely intended to lure users into phishing scams or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 https://inwebjor.ru/uplcv?utm_term=egg+to+face PDF link annotation
    • http://bogelaipigeon.com/upload/file/sapuribosafajuxawewukusut.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/lrb8ivmiq0dim6b7qspjg7dur3/56083039181.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160cad7f0ba4fe---93652574546.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7f9c1f4dc---53186773786.pdfIn PDF document text
    • https://arhometutor.com/userfiles/file/noxupoxegelofibojaxuzo.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/26385b9e8f564453da2e9e1a9e561c01/17665776262.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160aa6f5fa5c49---18385276178.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/aca9ed847092c2a7992e4c64223f7d91/67612795944.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/d8f1c01090d80e79df818bd66559ae0a/rebuloma.pdfIn PDF document text
    • https://rozgarnetwork.com/ckfinder/userfiles/files/20787208053.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/tosapesoviwupofavonebara.pdfIn PDF document text
    • https://newtech-utm.pl/userfiles/file/18154415517.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/xobomafi.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/33370709696.pdfIn PDF document text
    • http://abpaluso.com/upload/file/24252526162.pdfIn PDF document text
    • http://derma-dts.de/files/file/rotusojelunegevo.pdfIn PDF document text
    • http://munsusa.org/userfiles/file/20210601153507.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/d4411d74f20db4f6831aa8d6d247ff15/36973797149.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/v438k2djs8hi3rfhapdujk34b8/85093311676.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093d28a7c5bf---jewexukinagimim.pdfIn PDF document text
    • http://vralumni.com/clients/7/71/71e0d721b250bdad3664bf54e70089ab/File/nororofutoderulos.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/nedore.pdfIn PDF document text
    • http://waltwhitman1964grads.com/clients/6/6c/6c9ae932573016e5ff31759a10dce4b4/File/45549186664.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_off0000e7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EF 9984 bytes
SHA-256: 94343fbfde0dd4efec56207c8daa4ac8cec004687d1171614ebdd4684438435c
font_01_sfnt_off0000fe36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE36 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11648 19040 bytes
SHA-256: 92f987d4551a4e34a1156307b2c8a1e8d72b202900916352a047603d6e6066b3

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