Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff04d6001069f0d2…

MALICIOUS

PDF

72.7 KB Created: 2021-09-01 02:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 174a0e610f9b39b507e2e4348e936157 SHA-1: a330b5406e756e3193dd019e3ff10cc5b8725c95 SHA-256: ff04d6001069f0d2102cc2ef981e393691369ea894fbde7d78a3a893e9708553
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to multiple disposable hosting sites, likely intended to redirect users to malicious content or downloads. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification strongly indicates malicious intent. The document body is heavily obfuscated, but the heuristics and URLs clearly point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://drafthe.ru/uplcv?utm_term=five+nights+at+freddy%27s+5+free+download+android PDF link annotation
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/52a827e9c53399f87a7ee178ee318f6a/rimisowuxivetogawim.pdfIn PDF document text
    • http://holycrossyouthministryasp.org/clients/f/fa/fa15eac34f6f8ef5a8ada011ffef1578/File/mutufixazisowapuxomez.pdfIn PDF document text
    • https://ibshospitals.com/userfiles/file/29534853879.pdfIn PDF document text
    • http://stattus.com/assets/file/xudomexaropurive.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/nrhqqk7p0r7g455alh3ko41jbs/86628876577.pdfIn PDF document text
    • http://budka39.ru/files/rururalafitusufewodux.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160771cf1e592e---34607736085.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aaf72f3a7e8---zefunun.pdfIn PDF document text
    • http://anneadamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sigamumetopazip.pdfIn PDF document text
    • http://samtekelektrik.com/files/99909682910.pdfIn PDF document text
    • http://newgatedesign.com/Images_upload/files/tuzivebixuworaxopo.pdfIn PDF document text
    • https://cfacgroup.com/uploads/FCK_files/file/92322107649.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d176c980a---61679969387.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/padoniraguxufuromigulip.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210724104313489.pdfIn PDF document text
    • https://aurorabersinar2.com/contents//files/5794459102.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/1dnr4otvbrcm5qcm8va9qgvojh/42950660835.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/7ccd04235007c74d76aa39e11d23c005/bubinedetud.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/file/81729947382.pdfIn PDF document text
    • https://intrigantka.ru/images/userfiles/file/53779724753.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/7bcc3a3e6de381913ff7058b54215839/86986258451.pdfIn PDF document text
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/6vkvuvm1njq5ga0g62dqe85687/rakuxudimuzepufisiduwusil.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1611320236537a---zokefoxewonizefi.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/nimezututusikagikoxibe.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a7675acf2---21707378048.pdfIn PDF document text
    • http://mtsskzy.com/userfiles/file/sisoviwudoxatilopifivi.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/dumivamuvatox.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_off0000bccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCCC 11044 bytes
SHA-256: 7bb2933cdc03c81e7e4e5706c1a8320bde67b3fb078b5a6d4fb5511fe411da81
font_01_sfnt_off0000d660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD660 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE72 14868 bytes
SHA-256: fd4b19c0d1a684d6d9ff9dfbc7b0ef8e7878078632e6a865b98027adcbae13fe

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