Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eeb024be9db654b…

MALICIOUS

PDF

95.8 KB Created: 2021-08-17 12:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d477cec85fdb1f677b7c9fdd6f835980 SHA-1: b98c87d20fadd8dbee8971b0449c80ea01fd2672 SHA-256: 1eeb024be9db654b7a050254c52b29eb6483edf65dcdd5784556cae10cf5f751
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded JavaScript and a link farm pointing to compromised WordPress sites, likely intended to deliver a second-stage payload or redirect the user to a phishing page. The presence of invoice-related language further supports a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://laborke.ru/uplcv?utm_term=hotel+monthly+revenue+report+excel+template PDF link annotation
    • https://norservis.info/files/files/32284007500.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/cn2gjugtggv3s6gc4dtgrrab7p/68527083802.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/d55b743712444f0aa654bc0ee026a79d/23882541899.pdfIn PDF document text
    • http://dhsclassof70.com/clients/d/d1/d13f49183e6b2ef720c1f353b43de0f2/File/46428374029.pdfIn PDF document text
    • http://sunnysolutions.it/uploads/assets/file/24284183698.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c24655cae---kubef.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608aba1019513---xodokovagugexa.pdfIn PDF document text
    • http://abwlargo.com/uploads/files/16923537941.pdfIn PDF document text
    • http://lapenya.cat/imgjovesnaves/file/31137320748.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/skpkcdfstteuqtb6o6kbc48uh1/vogaduvuzikunoreguduka.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160988e868b9c7---56529002890.pdfIn PDF document text
    • https://cpc-serbia.org/js//files/wisexedisusuje.pdfIn PDF document text
    • http://blbr365.com/userfiles/file/1624369585.pdfIn PDF document text
    • http://tebsc.com/clients/84181/File/jolaxujepe.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/laxudejela.pdfIn PDF document text
    • http://guinyardfamilyreunion.com/clients/62985/File/gigovumusudeji.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/31543079186.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b67329ea7---95101662860.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/n06ogsvicbg8vg8krrda1d09ig/35383888782.pdfIn PDF document text
    • http://pelejas.com/IMAGENS/CKFINDER/files/kisozoruxovirapasixaredu.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c54701250e8---ruvikujofotoxu.pdfIn PDF document text
    • http://crossfit28.com.s125853.gridserver.com/siteuploads/editorimg/file/putofo.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_off0001111f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1111F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12936 10752 bytes
SHA-256: 0a03d57a5b69f716a16437bcfc62f913521abd85314b93bad1ce465dac4a5b28
font_02_sfnt_off000141c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141C0 17536 bytes
SHA-256: b7420be8d07823a5ed5bebb5ce3e9907473aa5710a2e2c62700347eec8508a41

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