Malicious PDF — malware analysis report

Static analysis result for SHA-256 b093e5f5990c6551…

MALICIOUS

PDF

78.0 KB Created: 2021-09-05 20:36:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7d014ee3567e4b15686c9c6ca5af4881 SHA-1: 0fac3a48d3bdada237c63971409f7cb769955374 SHA-256: b093e5f5990c6551a6a140daa0fb6cf54791ba16122d3aaf4de36b17f4465dc5
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The file contains numerous links, many pointing to potentially compromised websites or disposable hosting, suggesting a link farm designed to redirect users. The presence of external URIs and link farms indicates an attempt to lead the user to malicious content, likely for phishing or further malware delivery.

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://forresterfamilyreunion.com/clients/c/cc/cc72bfd2512333311cc1ef5a4fdef90f/File/39620380010.pdf In PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b0be9be4aa7---47888247036.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/menikejidelaj.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/10779155252.pdfIn PDF document text
    • https://kermoulin.com/userfiles/file/wagoje.pdfIn PDF document text
    • https://zegaoyun.com/calisma2/files/uploads/sadedolaruforademufogokos.pdfIn PDF document text
    • http://tksvolga.ru/userfiles/file/45933381117.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc242434c0---mujamogeve.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/4670825918.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/f0e0acc2ddf7302b83dc90ddb0591410/11227117569.pdfIn PDF document text
    • https://masterjobintl.com/ckfinder/userfiles/files/50335554124.pdfIn PDF document text
    • http://rotang.net/userfiles/file/monejaneziwofijusuzo.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a4961a868---vaxadobeso.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0828b331e---45596086322.pdfIn PDF document text
    • https://gemicilojistik.com/userfiles/upload/file/29694547683.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c886c3cd66---vobamuvololaxojexes.pdfIn PDF document text
    • http://angelascanu.it/uploads/file/jupisexerexe.pdfIn PDF document text
    • https://ijtm.in/userfiles/file/gilanezixexixa.pdfIn PDF document text
    • http://rockycheng.com/ckfinder/userfiles/files/saxuzunopozalix.pdfIn PDF document text
    • http://waxiangyuan.com/upload_fck/file/2021-9-2/20210902173035552341.pdfIn PDF document text
    • http://elazentrale.de/images/uploaded/file/62360370250.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/7fb5826fe45771fae741c5a3ec04090e/bupuxajolowuzizuwapa.pdfIn PDF document text
    • http://yourhealthyanswer.com/ckfinder/userfiles/files/famusutemafavomevizizivi.pdfIn PDF document text
    • http://tatnhapkhau.com/ckfinder/userfiles/files/mixobejijutarofejoxapir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=team+building+vocabulary+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_off0000cbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E6 11080 bytes
SHA-256: 651efdb7787f1d0e992afa6e88faf4fe2a420df42f037608594f66c7caf26098
font_02_sfnt_off0000fd37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD37 17472 bytes
SHA-256: b3e928269b627147701bbec88d82f3694be7c75d4097c33bc8be11210b80f9c1

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