Malicious PDF — malware analysis report

Static analysis result for SHA-256 824f02104252bd18…

MALICIOUS

PDF

73.7 KB Created: 2021-09-27 03:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2282fa3d8b7b4295a50b59e2b49c0f3a SHA-1: 4e7fd7ee31aff68c9e48c7a101297fb8e1ff800c SHA-256: 824f02104252bd18f4f14d6bd5e8d08a585068572ee834f62c7af75bdcca0035
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs pointing to various domains, many of which are identified as link farms on disposable or compromised hosting. These URLs likely serve as lures for phishing or to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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://queure.ru/uplcv?utm_term=suits+putlockers+season+6 PDF link annotation
    • http://yjeverspeed.com/userfiles/file/todogebezulin.pdfIn PDF document text
    • http://chamdure.com/DATA/files/wixitukuzo.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/ckfvd33a15cug1epn23e8c0ode/32276157867.pdfIn PDF document text
    • http://nhakhoauytinhaiphong.com/upload/files/bimokodikedebaji.pdfIn PDF document text
    • https://www.pension-chevaux-haras-gabereau.fr/ckfinder/userfiles/files/nasolebitekofa.pdfIn PDF document text
    • http://diadiemvui.com/upload/files/51941204535.pdfIn PDF document text
    • https://htijsr.com/userfiles/file/pobodesasavuwi.pdfIn PDF document text
    • http://mbfeed.vn/upload/files/18392805891.pdfIn PDF document text
    • https://yp05.com/_UploadFile/Images/file/86386944713.pdfIn PDF document text
    • http://lovelyspa.net/ckfinder/userfiles/files/84294201243.pdfIn PDF document text
    • https://kamhosting.nl/ckfinder/userfiles/files/26944905363.pdfIn PDF document text
    • https://ppkh.net/userfiles/file/77818450446.pdfIn PDF document text
    • http://i-physiology.ru/upload/bupivedurepimila.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/78388087195.pdfIn PDF document text
    • http://unitekinfostructures.com/userfiles/file/9307690217.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16137cffc87ae7---93978695981.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143cc1023cbc---68640729736.pdfIn PDF document text
    • https://ibextrail.com/editor-images/32746683455.pdfIn PDF document text
    • https://preciseenergygroup.com/media/37397818679.pdfIn PDF document text
    • https://smsenerji.com/resimler/files/71683777394.pdfIn PDF document text
    • http://klwas.org/userfiles/images/file/dedupavuxebudesubowul.pdfIn PDF document text
    • http://superfasttv.com/uploads/files/mojevelarunu.pdfIn PDF document text
    • http://seidels-mineralienwelt.de/images/uploaded/file/86784876041.pdfIn PDF document text
    • http://ncdesign.it/userfiles/files/71817472853.pdfIn PDF document text
    • https://www.pelicanfinancialnetwork.com/ckfinder/userfiles/files/bopejule.pdfIn PDF document text
    • http://ksboutlet.com/file/files/viwelikuleromufa.pdfIn PDF document text
    • https://prcomponents.com/ckfinder/userfiles/files/dopuwefufuf.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_off0000b909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB909 17548 bytes
SHA-256: 117d607f79e9db5c68701189c4cf8084db730202b25312fcfb073e034ec687b0
font_01_sfnt_off0000e5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fdd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD1 10800 bytes
SHA-256: 12b18bf8f4f2baaf8f15cdf6390e998cc8cb2e330b387406578621d3f68fc335

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