Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f8fe23fc598efb…

MALICIOUS

PDF

89.3 KB Created: 2021-08-27 11:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 96b3879f186d5618b5fc7c5ab6a4a730 SHA-1: 160a93728bd9a2b3a4b63e2b5e50d220b235eec9 SHA-256: 95f8fe23fc598efbf95bf15c2937fd42e9c34456f1710c1a5ec84af81109a25f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS upload directories. This suggests a phishing or redirection scheme designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://drwatsonsr.com/clients/2/2b/2b9a0cf27321ceab3a47fbd10bf94d34/File/48796636116.pdf In PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/beae848a9699acee207c32e0777b6c54/43751539458.pdfIn PDF document text
    • http://www.klimavill.com//data/editorfile/paxibadozuju.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/wibusedigitemo.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611e5e2bb2397---pikijedilipilizuwujojobi.pdfIn PDF document text
    • http://cuhs1981.com/clients/8/82/82ca37c076ec4232796cb58ed009bb3a/File/zewudivevogurabifolujimi.pdfIn PDF document text
    • http://micronforgacsolo.hu/UserFiles/file/39349228440.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/naxafikekakilixox.pdfIn PDF document text
    • https://mysilo.com/upload/ckfinder/files/gonadoxug.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/7eem7nl1s0egou6kbehjggmre4/97814255521.pdfIn PDF document text
    • https://www.colline-eternelle.com/ckfinder/userfiles/files/nolojegexuna.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/89e1dde8dccd378ea65e174c1f1d0cc0/wilafaduzovinomaguvipowe.pdfIn PDF document text
    • http://biaikatolikus.hu/files/file/megiwufejakufizusufujitox.pdfIn PDF document text
    • http://silesiacapital.eu/data/file/78755112903.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/f911535e68b19830d913db31d913213b/juniguzexamofupipame.pdfIn PDF document text
    • https://madhubanindiancuisine.com/nbloom/fckuploads/file/63940771502.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ronubifoxosuxi.pdfIn PDF document text
    • http://pokorny-podlahy.cz/UserFiles/File/gazudirafiso.pdfIn PDF document text
    • http://reklama-kemerovo.ru/files/files/jutepuvivomipigi.pdfIn PDF document text
    • http://afslab.asia/upload/files/rujiwubutazuresufigixaz.pdfIn PDF document text
    • http://benedictinoselrosal.org/ckfinder/userfiles/files/19378032168.pdfIn PDF document text
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/50770191698.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701ebec205f---43141552346.pdfIn PDF document text
    • http://reversetheclocknow.com/ckfinder/userfiles/files/keluguvafededinexe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=grinder+house+coffee+shopPDF 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_off0000fab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB8 17200 bytes
SHA-256: 3c195f00ecade01278d45e0a6fa142fe940ec2d62802b48a926ff06aa93a95ad
font_01_sfnt_off000127a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127A6 10548 bytes
SHA-256: c47f2a642c68ecb955294be42d0fc1fbce3f02da159af87e88f1fc8f962ae7ea
font_02_sfnt_off00013f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F9C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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