Malicious PDF — malware analysis report

Static analysis result for SHA-256 d901679fd2f416cf…

MALICIOUS

PDF

91.5 KB Created: 2021-07-23 16:35:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 23945730c717fddd9041ea6e605eb9bb SHA-1: 87888b2f05605aef31fcf95e09e1002802b57090 SHA-256: d901679fd2f416cf02abc96e5508f985e01602678a067207b0f558d698a821c9
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting it functions as a link farm. The primary goal appears to be directing users to potentially malicious or phishing content hosted on these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/698b9fede5d9b2c640737ed864dd0b3e/perefafirizovifiwesomi.pdf In PDF document text
    • https://esperanzadeavila.com/fotos/file/82110474881.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a009dd137d2---sasaxejuxomamotago.pdfIn PDF document text
    • http://wingmanplanningdemo.com/userfiles/files/zifalukafujujov.pdfIn PDF document text
    • http://myconnect-thailand.com/image/upload/File/tujupujiji.pdfIn PDF document text
    • https://blnk.eu/userfiles/files/vepudowizirinawubax.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/c546737c5708dc6059ae5cfb64bdc150/zasewexoralusodenevabexa.pdfIn PDF document text
    • http://arisutour.com/ckupload/files/fanewuri.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886af56fafb---69149449747.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b9dec330c0---sogunada.pdfIn PDF document text
    • http://eths1967.org/clients/6/6b/6b000f7c2bca5b3a89f93fde6b54c5e6/File/laposoxogiwika.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b75426c8dcc---58150711757.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/luwijor.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec9f5ba04d---70858561679.pdfIn PDF document text
    • http://westboroughhigh76.com/clients/b/bc/bc4984db1d461a603911d7e4814e3e59/File/4337352364.pdfIn PDF document text
    • http://www.kizkulesikizogrenciyurdu.com/public/ckfinderuploads/files/migibodewosavaroporatoko.pdfIn PDF document text
    • https://sbsoftware.ro/admin/userfiles/file/fawef.pdfIn PDF document text
    • http://ohappy.org/userData/board/file/35404840061.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607490a416bf2---vifokep.pdfIn PDF document text
    • http://rmgoals.com/userfiles/files/zulevubijetenavilefemamav.pdfIn PDF document text
    • http://bmsorganica.com/userfiles/file/62526396316.pdfIn PDF document text
    • http://go-pxl.com/uploads/files/vinudajusopemexoze.pdfIn PDF document text
    • http://acrclubinversores.com/files/galeria/files/14334931555.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=what+is+the+silva+mind+control+methodPDF 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_off000103bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011bd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD2 10692 bytes
SHA-256: 96e28799edb0357687adf45fd8e4042b96388248cd712ddcd2ca48f4c8b65c16
font_02_sfnt_off00013428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13428 16824 bytes
SHA-256: ee0641c5b8da4d11137d85428cd9b9f0390d9a95ed01c73d230c492a7e61fdd1

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