Malicious PDF — malware analysis report

Static analysis result for SHA-256 1785f7591339424c…

MALICIOUS

PDF

68.2 KB Created: 2021-09-30 19:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: bf6b0bb3bb51510bb7ee2f6d3f2058c2 SHA-1: d998b93c59d88efc2fdb6073a1b2018fa176a162 SHA-256: 1785f7591339424c40cbf1c71364509863bf4ba5ad84431582d3790ec1729afd
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains embedded JavaScript and a significant number of external links, many hosted on compromised CMS platforms or disposable domains. The heuristic 'PDF_IMAGE_LURE' suggests it's designed to trick users into clicking by appearing as a full-page screenshot. The embedded JavaScript likely facilitates the execution of malicious actions, such as downloading a second-stage payload from one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://huntic.ru/uplcv?utm_term=deadpool+2+watch+online+for+free PDF link annotation
    • http://avtokit116.ru/!upload/files/kigugaponekizoletunoxux.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/9671756642.pdfIn PDF document text
    • http://vecsecity.info/editor_up/58386916932.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/161359ecfb2b6c---sepedefibime.pdfIn PDF document text
    • http://dh-cell.net/ckfinder/userfiles/files/21842399359.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/mamopiwiwapolosebowetube.pdfIn PDF document text
    • https://bodegoncriollo.com/userfiles/file/83983881706.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/161469c8e2af7b---53463291645.pdfIn PDF document text
    • https://ncltandatbar.com/home/ncltandat/public_html/dowalumniusa/ckfinder/userfiles/files/xepumonud.pdfIn PDF document text
    • http://bakoca.hu/files/file/texiwavevifaxalenonusoduz.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/83982257703.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614f9a08025a9---zapidulufelabanuladuj.pdfIn PDF document text
    • https://bmw-zona.ru/uploads/file/peweniduzedojemu.pdfIn PDF document text
    • http://hoya889.com/upfile/files/20210927061619.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615142d857156---vovezusizurinerex.pdfIn PDF document text
    • http://hanabi-la.com/uploads/files/95925267820.pdfIn PDF document text
    • http://helenhotel.vn/upload/files/jokarebobusadebimuk.pdfIn PDF document text
    • https://togeltop.com/contents/files/39742420231.pdfIn PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/70284632057.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16140f80b011b2---pelefenijalexozudorifam.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/gudimax.pdfIn PDF document text
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210910012940013677d8gwn8.pdfIn PDF document text
    • http://www.cst.rnu.tn/js/ckfinder/userfiles/files/dogaxolopi.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_off0000ae15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE15 10756 bytes
SHA-256: 239bb9f63679e12add8c3aae004f907819c6d9c8ed1e9bf8476418ae487b8d15
font_01_sfnt_off0000c6d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE6 13980 bytes
SHA-256: a7187d7f12d33b8f59f8c3e61d0db420f609a8d64905fb42cd0cbca14f96a20f

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