Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29737323bceeeac…

MALICIOUS

PDF

100.3 KB Created: 2021-09-05 01:01:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: b45a18b5d522474c5d371931cb0fbaf9 SHA-1: b6d7bed24d480d864000ef60b87c0fd77685aebf SHA-256: a29737323bceeeacba55a53cfe48cfcbb69fc03bc4d47609162bdaa3fc07f5d4
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://carscaso.com/js/upload/files/29402491900.pdf In PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c46ede4560a---xodonamawadajowe.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/jozegofaronutibiwebivipa.pdfIn PDF document text
    • http://pharmorgsyn.com/upload/files/refededuruvos.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/29d702476222fc7667027d6a8f4404b8/xupibovuzepop.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/38b0ebe3763fa23c01eb017f86c79a36/93138888173.pdfIn PDF document text
    • http://piemonteforyou.it/userfiles/file/todurimup.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16072e9df2b1e4---logikapuvarotoguxarudotoj.pdfIn PDF document text
    • http://udaybharat.in/ckfinder/userfiles/files/63779351243.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/xojides.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/jizudubipigajaluneref.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/piratari.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/fr9tg8mp06lnnj3k0i03tsojj2/22829328533.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b80806a88f8---danetadofenedewomifox.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/4084fc5998d0b2013f9ef3fc56126bf2/13532205219.pdfIn PDF document text
    • https://bevelec.com/bevelec/dossierMois/file/fewoxi.pdfIn PDF document text
    • http://airholic.com/UpFiles/WebEditorFiles/file/dagipa.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/98914343040.pdfIn PDF document text
    • http://aivieksteslaivas.lv/userfiles/file/muradizotetarar.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/67067534658.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607863e91a67c---67931514945.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/1010466157.pdfIn PDF document text
    • http://thegioioto.store/upload/files/munasiguwewapevuroded.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=chaconne+in+d+minor+guitar+pdfPDF 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_off00011a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A2C 10984 bytes
SHA-256: ac26453cbb110cf423096bcc47ca6d6c6b3abe063ebc750bec4ecd528504473f
font_01_sfnt_off00013349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13349 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B5B 21072 bytes
SHA-256: d7327f4fa6a4397d25b44e9288012bed67cf5ff60b97e73b644792627f530bd1

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