Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4864233a558fbe…

MALICIOUS

PDF

93.6 KB Created: 2021-08-20 14:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 726846f09453c6e8a6467c5e5ce819a3 SHA-1: ecc23ce77abdeda7900270dad9fd3a635fbc4c5b SHA-256: 2e4864233a558fbe686766500591cff00a4f7a8cde005fb1e184fb8f3a2eea99
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to exploiting users through these links. No scripts were extracted, so the primary attack vector appears to be social engineering via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://suphammamnon.org/uploads/files/zizifigasanutekigalikeboz.pdf In PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/gazosogesulus.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/56fa955af294e01219495b69cee14cc1/basagosejogomamanurevapej.pdfIn PDF document text
    • http://casier-a-bouteilles.com/file/lanezuvixuladu.pdfIn PDF document text
    • https://ka-base.no/images_content/file/xigigape.pdfIn PDF document text
    • https://mimpishio1bet.net/contents/files/8934778817.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/dcd138453543de5555b2b1a677722e13/27735003790.pdfIn PDF document text
    • http://kochamsushi.pl/UserFiles/file/jujoxudo.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aec5a1833c5---topolowenilevakasoxaxiku.pdfIn PDF document text
    • http://vietsaovang.com/uploads/userfiles/file/xigorev.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/39333974215.pdfIn PDF document text
    • http://chinocorporatechallenge.com/clients/6216/File/78707074336.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/pizipexigosow.pdfIn PDF document text
    • http://ithalattagarantibelgesi.com/resimlerfiles/jatogokozepi.pdfIn PDF document text
    • http://ecoaga.com/documentos/file/17571909866.pdfIn PDF document text
    • http://pressvaluation.net/userfiles/file/zinelozijo.pdfIn PDF document text
    • http://bowlinggreenhsclassof66.com/clients/b/bd/bdf8ab256cd88a603fc2b95a051c5839/File/kexatadituz.pdfIn PDF document text
    • http://kochi-mimoto-iin.com/TakamatsuClinic/userfiles/file/danaxemiduxalirubifizize.pdfIn PDF document text
    • https://bettyloupaints.com/userfiles/files/suxun.pdfIn PDF document text
    • http://app8itebarandgrill.com/admin/images/file/51756532250.pdfIn PDF document text
    • http://medicare-darmstadt.de/bilder/UserImages/file/jinanawavikabiliki.pdfIn PDF document text
    • http://turhantur.com/turhantur/files/90598088422.pdfIn PDF document text
    • https://andana.us/files/files/71328263127.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/071dj6brvcbqpr27194i19pa5j/15754568212.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609a367296093---vifusirobotoravasuw.pdfIn PDF document text
    • http://somsit.com/ckfinder/userfiles/files/gojojofaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=comment+apprendre+%C3%A0+parler+anglais+couramment+rapidement+pdfPDF 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_off00010755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10755 11280 bytes
SHA-256: 98da1b3bd7c159e32867ccb67b597cb55ef9d2dfc2354e4776e4496eb80096fd
font_01_sfnt_off0001212f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212F 17628 bytes
SHA-256: 3d82346100642b30bd480086033dc1a1fbdb480164ec620f3043bcf36f0ea276
font_02_sfnt_off00014d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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