Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0115e2a28a28ad…

MALICIOUS

PDF

98.1 KB Created: 2021-06-30 10:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 033af87936f76ee07c529256ce191a25 SHA-1: 9bd999c9517e80bff8c9c5cad2b1905058ade2ea SHA-256: 6b0115e2a28a28ad1c05303b13d9af603ff62f024124ea21fc1a6b51650641e3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a link farm pointing to numerous distinct hosts, many of which are compromised WordPress installations, suggesting an attempt to distribute malicious content or phish users. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

Heuristics 6

  • 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.
  • 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://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a1cb88a3fd5---62610718241.pdf
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16071183e0c3d7---62896208523.pdf
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae65b5bbb20---xabuvugoforelerijuzifo.pdf
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/hd6tsg3l8550rdqk99pglku7o0/jatazowowulamulezaxol.pdf
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd30a8075b---18457424898.pdf
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4e187e04f---dasepolovi.pdf
    • http://www.css-jp.com/upfile/files/2021/06/10/13209432882.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b390f2db52b---texakune.pdf
    • http://alisawedding.com/upload/users/files/97100465588.pdf
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160782f6b8c003---70526936292.pdf
    • https://hse.tw/upload/file/ligezebogedagemebe.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/39k2dfa2thlqherudi54miuokb/dipusepoju.pdf
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/vnm3t70350aic71vqu0osrshg6/31209400843.pdf
    • https://bem-sa.com/img/file/zemalowajufuteni.pdf
    • https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/a95b1944ff7ff5a8d65b0c5eb6b160ab/rogiwibifupetuzob.pdf
    • https://slaterlighting.com/wp-content/plugins/super-forms/uploads/php/files/f262c0da03a6da4ac18c37893d627b8d/81424977929.pdf
    • http://clingac.com/d/files/77125301660.pdf
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/d58c187c6a845610c168e00e944d7ac6/49605888057.pdf
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8eg08587426q8r37gguo4spd43/gupokovepijifajoro.pdf
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1a2f2fa55---xerunenuxemesosajizeb.pdf
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/7iqeee9a3spt0906je1okn12aj/wamorosej.pdf
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf3b503f2e---12452059581.pdf
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/1957575afad7710afa7654989120de9b/22758954912.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=apple+and+sultana+muffins
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105b7.bin
dd2301655831a91e82b2c67a0732e9cf5482af4f53b871be9a9e564038c3bcb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105B7 10520 bytes
font_01_sfnt_off00011da8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA8 16792 bytes
font_02_sfnt_off000135b9.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135B9 16092 bytes
font_03_sfnt_off00014afa.bin
378d8c458586fea14061a05f785d2a0e4df5d9a96c7b2d3ff4e737cf9946e6d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AFA 18220 bytes

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