Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2cfb54949a1b005…

MALICIOUS

PDF

81.8 KB Created: 2021-09-06 06:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 37afbd76158072e3429f42351c5f8251 SHA-1: a21b1f818e66e43b1900ef4a101867078ad7ee90 SHA-256: c2cfb54949a1b0050e4bfef5384c27bec29e7a7601ecaf8e3ab45a966e9534f1
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. The document contains numerous embedded URLs, many of which point to compromised WordPress sites or raw IP addresses, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/5c70d53592f5ad2fbe027ad833f80da0/wurujedapujazisaxisojuvo.pdf In PDF document text
    • http://chromatographvials.com/d/files/81296443061.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160a30f38f1f52---revusapoxar.pdfPDF link annotation
    • https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/1295468986.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/b93f9d0de2521fb9d012db2b88393d13/xamoboranefibuwuvi.pdfIn PDF document text
    • http://xboxheerlen.nl/userfiles/file/sanisojikivejivis.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/nosenosemo.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607be88d48d36---52333112497.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/apakmfrvqi0ako3g1a0uo8bfq0/76504656584.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/544bf30fc44c854c67d23d6ea1950a85/14050846280.pdfIn PDF document text
    • http://stpatricksreunion.org/clients/84553/File/75219520278.pdfIn PDF document text
    • https://bwhe.in/ckfinder/userfiles/files/sopawekimuwatomivomaw.pdfIn PDF document text
    • https://afayl.com/userfiles/file/57639848198.pdfIn PDF document text
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/47776723829.pdfIn PDF document text
    • http://emblem4home.com/UserFiles/Member/File/8931317518.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/2e0b07239c7d957b50b8bad6fdc19bb3/94192003765.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b79329b861c---tovenaluzukotomenimuzita.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/5deb6fb38bc3185da34111d6cac83bfa/81372559190.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/340b4295ad45f242602c8f35b6023f1a/57638903144.pdfIn PDF document text
    • http://tsrmmessina.it/userfiles/files/37797129792.pdfIn PDF document text
    • https://datajournonepal.org/files/jubezopin.pdfIn PDF document text
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/fa55794adecec2a6d2449522bfc2a066/1870915567.pdfIn PDF document text
    • http://photopuzzle.net/userData/board/file/muneju.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/pna6kgo77s5rg1mr25hb5hd3l5/50921649658.pdfIn PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/xerozunida.pdfIn PDF document text
    • http://tj-1970-50yr.com/clients/e/e8/e8fccb6fb94f20b6ca4375945b3939e1/File/94104496392.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=root+word+worksheets+5th+gradePDF 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_off0000dadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADC 17476 bytes
SHA-256: e0b0dbee383831c198bffa7dd50a7df0795c1517f9fc2b28ce68dbfd778d64ad
font_01_sfnt_off000108a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A5 10640 bytes
SHA-256: e7ecf5715f4bd0e832d545f07f251cdaca80b43dafb3bc3b2466e80101c06cea
font_02_sfnt_off00012118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12118 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1