Malicious PDF — malware analysis report

Static analysis result for SHA-256 08926fedcd49f811…

MALICIOUS

PDF

82.1 KB Created: 2021-09-19 22:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 6874b6c451732fe02adbb684ef722eca SHA-1: 3ea970c9b271cb3132cd015e9dc317d33b5bc93d SHA-256: 08926fedcd49f811ccf7e949357803bbedd876797cbe3c83c806b5c01185be7c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to various domains, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest this is a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://infrive.ru/uplcv?utm_term=mardaani+2+online+play PDF link annotation
    • http://seoulsquare.com/userfiles/file/99909887496.pdfIn PDF document text
    • http://status-go.net/gfx/userfiles/files/nodoluvaluzon.pdfIn PDF document text
    • http://aal.tw/uploads/htmlupload/files/47382049539.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/50888520917.pdfIn PDF document text
    • https://andrejc.si/files/file/36646539799.pdfIn PDF document text
    • http://soupworld.de/upload/file/15341952853.pdfIn PDF document text
    • https://tckontrola.hr/files/10524650744.pdfIn PDF document text
    • https://www.mppoa.cloudlinesystems.com/assets/ckfinder/userfiles/files/94429251168.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/93393369871.pdfIn PDF document text
    • http://3e3i.com/UserFiles/file///xufejitozofevomavoxefogiz.pdfIn PDF document text
    • http://iseveranscopy.com/upload/editor/file/kesomutogulidiruxukudoxo.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/482682b5a8f88988c3d884c591e136f9/17951507053.pdfIn PDF document text
    • http://bukvoznaika.ru/ckfinder/userfiles/files/35184499435.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b06260eab---nifovofodivununevulavuse.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e9f9d5667---50849683555.pdfIn PDF document text
    • https://barcelonacentremedic.cat/files/galeria/files/80478593610.pdfIn PDF document text
    • https://paymentor.nl/uploads/file/60961604532.pdfIn PDF document text
    • https://grupa-energia.pl/attachments/file/72507152378.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/9988886646.pdfIn PDF document text
    • https://filetorme.com/upload/files/19914031553.pdfIn PDF document text
    • https://pemaboutiquehotel.com/assets/userfiles/files/biloradaposabugorukaworid.pdfIn PDF document text
    • https://bem-sa.com/img/file/betejidubutuvekomasi.pdfIn PDF document text
    • https://devcons.org/uploads/userfiles/files/mojojuxu.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/sls6n5tn7uq0llsmd4fcc0fbfb/kikepavovevukozudexewo.pdfIn PDF document text
    • http://naitikfashions.com/ckfinder/userfiles/files/89647713218.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/tdqrdc0l3pco0431vs8m07j0u7/96928556787.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_off0000ddbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5CD 17496 bytes
SHA-256: 7993f610269b0fe29c747c1bddd5a2a74ad086c059b9271d41970fc640e88a06
font_02_sfnt_off0001231a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1231A 10348 bytes
SHA-256: 59124b832dcc66a333d45aadd1a5892ea9b2e1e31e7bffe2483880dfe60902d5

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