Malicious PDF — malware analysis report

Static analysis result for SHA-256 208b9041358a5ddc…

MALICIOUS

PDF

78.9 KB Created: 2021-09-02 15:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c3fd28741f7319163ddabece9f1ff2b0 SHA-1: 5827562aad3f57fea1b3475eb32734dcfb25ed26 SHA-256: 208b9041358a5ddc3656bb3ff9f324b4c77db57109b32d3eb2bd1a9ce16c6195
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. It contains numerous external URIs and links to compromised WordPress upload directories and disposable hosting, suggesting it functions as a link farm to redirect users to malicious sites. The document body was unreadable, but the heuristics strongly point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://garglob.ru/uplcv?utm_term=ef2600+yamaha+generator+manual PDF link annotation
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/50284171107.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/jvacv0ek6ntfkte947p4nefcms/fexagej.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/86063553383.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/vqt2dpj2010ck70ppfbef4v7b5/dopogepetutiz.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/t83lgv113p6ovjkvio2rcn63sc/60674427405.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1610d5a9e05a0a---wojitezotabolosarop.pdfIn PDF document text
    • http://aktifbant.com/resimler/files/jujuziniwotivuxupolaladeb.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/fojorovobegulofoz.pdfIn PDF document text
    • http://df-2.de/images/daten/file/sejuxatuxofovi.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/88d61ac7e2d9bdeedeb8a49818e1f589/78834023793.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/f94c793288c149e2039b0d56ad6adafc/jajogexeg.pdfIn PDF document text
    • http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16247587828734.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/9f3cd52a950c7daecd7ec6545fdb337c/dexexoxasixaterek.pdfIn PDF document text
    • http://eskuvoiiranytu.hu/blog/file/reseberog.pdfIn PDF document text
    • https://dalnoboy.com/data/filestorage/upload/files/xawujo.pdfIn PDF document text
    • http://arch-teh.com/pic/userfile/rofurifefazokirugati.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/b0275e412744f91be20f3dcb2bb37f37/18686661191.pdfIn PDF document text
    • http://kientrucnhacuagio.com/upload/files/wesozuru.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/tewenubix.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/22acf1d6dcd4610a09467fc56da631e4/wasutekotug.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/ca4a69e8461604e114b5fcb75dcb4fc6/wuwixibekisimev.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/7b03eb76dc86ec1481c3dfbbe24eafa3/tofelapuparutiwivobatapuz.pdfIn PDF document text
    • http://kavtas.com/images_upload/files/27422380959.pdfIn PDF document text
    • 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_off0000cc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e41e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41E 18588 bytes
SHA-256: 7f44890d77dbc679a1b959636e29d5dc18fc79ec1be328870ad5fd83ed954674
font_02_sfnt_off000114e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114E2 11008 bytes
SHA-256: 1f4e5937b181eb401df1fbdf6013b88002221880df69ef4ca7793ec3a989b8c3

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