Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bed955180aa0ada…

MALICIOUS

PDF

71.2 KB Created: 2021-10-04 10:06:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 5796de2e1e739f2fee3cc49945e45c76 SHA-1: 9c768bc8c0d1d4a77f2d772085af8659e062babd SHA-256: 9bed955180aa0ada047fd2d3261ed950622896554e4e0b17eca07399b2a7c73c
156 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a link farm, with several URLs pointing to potentially compromised or disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing or malware sites. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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 http://neilreardon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/56576408401.pdf In PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/fetapikodibima.pdfIn PDF document text
    • https://tapetcenter.ro/app/webroot/files/userfiles/files/zesokedenixi.pdfIn PDF document text
    • https://cdmsig2.com/ckfinder/userfiles/files/97471046108.pdfIn PDF document text
    • http://gotoippc.com/ckfinder/userfiles/files/44977304690.pdfIn PDF document text
    • https://eventaipei.com/upload/files/mefubigutino.pdfIn PDF document text
    • http://sobateracota.ro/mm/file/26966098331.pdfIn PDF document text
    • http://energyexcess.com/userfiles/file/kefopaxanuzex.pdfIn PDF document text
    • https://auto826.com/uploads/files/sepokoravibagurix.pdfIn PDF document text
    • http://glassick.com/userfiles/file/55497806922.pdfIn PDF document text
    • http://coimbra.hu/uploads/ckfinder/userfiles/files/62147538006.pdfIn PDF document text
    • https://siriusdynamics.com/assets/uploads/files/koforas.pdfIn PDF document text
    • http://esen.life/userfiles/file/5740624242.pdfIn PDF document text
    • http://josephfellerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lovamusoguvukefativifazen.pdfIn PDF document text
    • http://www.miyadenthai.com/image/upload/File/ziderabipebekamanoseve.pdfIn PDF document text
    • http://siddharpeedam.org/userfiles/file/In PDF document text
    • https://www.potravinyav21.cz/ckfinder/userfiles/files/mukamorip.pdfIn PDF document text
    • http://gk-eventus.ru/admin/ckfinder/userfiles/files/60711065155.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145b8a87e371---pazezirolusajago.pdfIn PDF document text
    • http://avvocatoandreabruschi.it/userfiles/files/ripibidejimesuramumuvagi.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614521acdd195---tixanatepumepugimuw.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/161573d2230724---mesejiloma.pdfIn PDF document text
    • http://dobosugyvedkecskemet.hu/userfiles/file/kuripinetusuvulamazunufil.pdfIn PDF document text
    • https://cupanghitam.com/contents/files/95915467387.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614b75865eb5f---76526572978.pdfIn PDF document text
    • http://www.moyekolodin.com/files/mamimudepebekapolaze.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/9f988d9237012069ba10643f9069b72d/poralinaxax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=angst+meaning+in+englishPDF 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_off0000b720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB720 10316 bytes
SHA-256: c849d7d8281d7ee8d5ff6d04a66e987dd454e08435418abbef5f1cea595a7807
font_01_sfnt_off0000ce2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2A 16028 bytes
SHA-256: 6af0beb8cea55325bd53c4a9955112ef2b20aaf4ebefa3492db3e09f48cadc06
font_02_sfnt_off0000f6a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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