Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdea50564bd487b4…

MALICIOUS

PDF

88.3 KB Created: 2021-07-01 23:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 09ca26251b5dec43648422eb4ef39058 SHA-1: e2598b884c03690de9a5f5da4ffea387e36534fe SHA-256: bdea50564bd487b45b01a469e415db42923405b09a6ea888bde96447110f2e33
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting sites. These links are likely intended to lead users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=bowral+to+canberra
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb97878f822---53640845906.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5df2f19b02---10714774057.pdf
    • http://phantasos.org/userfiles/file/mujulunoxefat.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606caaac37f66---65542024045.pdf
    • http://ultraljud.nu/bild/files/retixeraxefulururobodir.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607c30ed045e9---fozejex.pdf
    • https://autotrans911.com/thread/admin/uploads/file/zabutufipezepazowa.pdf
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/c90b924b0e5dc98fc797dab8aba90334/kijezozapopunosagirixupuj.pdf
    • http://ithaca1966.com/clients/8/85/85e9e0a76fddb83d7689cebc6ab07fae/File/25755279387.pdf
    • https://dangeloremodeling.com/nbloom/fckuploads/file/pilalifupulekakarisaru.pdf
    • http://cokhisah.com/webroot/img/files/kipogewazobavezawaj.pdf
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f3ee4c38f---22971234237.pdf
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085afd051c05---6436281425.pdf
    • https://adasms.fr/userfiles/file/lexipubekefug.pdf
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/bdb6573655b8282a05adda503dc720cb/37154051205.pdf
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/bf86ba8e9694d3eb64f67c073751cfd3/rorazipezobuvenelutovim.pdf
    • https://charlesstreetvideo.com/userfiles/file/85989560237.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8656376cc9---mudavom.pdf
    • http://gwardiajuvenia.pl/zdjecia/fck/file/52083925022.pdf
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/2adg8j11ctaf9gtvujbjipdrr4/90357667958.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16095e4efdeea5---26572089737.pdf
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a37667d8184---darariropadibemuri.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b008cfc7b39---gevofafivipopexigomizol.pdf
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/rhfihktdteh5vvm6c0tko9n19i/77103741926.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d54694754b---numowokopipavuxomonemave.pdf
    • http://short-story.ru/upload/file/muwedifijemogolugepexu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3c3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C3 16792 bytes
font_01_sfnt_off00010bda.bin
4b8666719c5de6b04c84bdeae1e07e914733e8c430748cbeda7b0b0c7f740479		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BDA 10240 bytes
font_02_sfnt_off0001231a.bin
680513469c52c1e56829dfaf6fc148fab52f79af3944631c2866e4d0308ce01a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1231A 18396 bytes

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