Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14d05b8346243c9…

MALICIOUS

PDF

71.2 KB Created: 2021-09-19 21:10:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: cf0a20c06f2c7396be4b078e44a5ffdc SHA-1: a9a76fe15ac61df3df6f66d0a1857d5e3ff08672 SHA-256: f14d05b8346243c98c38c0a9b867ccf737711f81e452fd8a46058e8d1a17d686
184 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. It also features a link farm pointing to various URLs, including one that uses a raw IP address, suggesting an attempt to obscure the final destination. The presence of ClamAV detection and ML flagging further supports its malicious nature, likely as a phishing lure or a downloader for further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://santeh.md/img/files/busewugavirupu.pdf In PDF document text
    • https://360clothing.in/home/www360cl/public_html/uploads/images/files/bapotolujimexokofipazolo.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/11420916003.pdfIn PDF document text
    • http://nguyenxuanhuong.com/upload/files/32573288177.pdfIn PDF document text
    • http://sumisaedu.com/FileData/ckfinder/files/20210916_DC3885709F3B97B5.pdfIn PDF document text
    • https://www.vignolaweb.it/ckfinder/userfiles/files/73205437902.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/37259110053.pdfIn PDF document text
    • http://elementsgogreen.com/userfiles/file/sarelen.pdfIn PDF document text
    • https://kapefashion.com/files/files/53443225317.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/27ed6ac281314992b1c7164bc7f197a8/suxivevidikeje.pdfIn PDF document text
    • http://midesignvn.com/uploads/files/kasej.pdfIn PDF document text
    • https://gionggiacam.gagiongvitgiong.com/ckfinder/userfiles/files/junarubitumozasanamemu.pdfIn PDF document text
    • https://kermiradiatoriai.lt/images/files/rotiwamizemufigifoda.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/161378900e2e27---jakuforonewarir.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/161465f3a6fba7---xapibejepuzusezisaj.pdfPDF link annotation
    • http://tufaghanafc.com/js/ckfinder/userfiles/files/xugagekikiwopivufe.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16132569b23299---84023369569.pdfIn PDF document text
    • https://alate.org/admin/fckeditor/editorfile/puvatemibolena.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133fc824346e---52172482804.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/0glh9siu52fcljnjdj2qqbun1t/35449305266.pdfIn PDF document text
    • http://awarelaxcentrum.cz/user_files/file/13832282709.pdfIn PDF document text
    • https://mtestbd.com/assets/uploads/files/95689937461.pdfIn PDF document text
    • https://htcpost.vn/vietpost.vn/img_content/file/30883033622.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=lone+wolf+apk+modPDF link annotation
    • 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_off0000b457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB457 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6E 10336 bytes
SHA-256: 8698f2c5096a9134c0a2258d87fd99fcc127d61eda9c71e860165262ffc4b788
font_02_sfnt_off0000e3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C1 17284 bytes
SHA-256: 5c53c61c514416835807956c79b0c63ef46648c8f0a7f780f6a9719b32c5ceb6

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