Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6f822592b26509…

MALICIOUS

PDF

85.4 KB Created: 2021-09-19 12:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 6f14187368c532785a93b7019232ab0a SHA-1: dc1c7d550be6d75be576e0f72b3dc3e56f63db0f SHA-256: fa6f822592b2650982c535106677a3933f7f1d7b6a70bb853341af0201fe3d0a
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URLs point to a common tactic of using compromised infrastructure for distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613936daa4e05---siwigikisafolete.pdf In PDF document text
    • http://jornalespacoaberto.com/app/webroot/datafiles/editor/files/mopexuwovijilusa.pdfIn PDF document text
    • https://galaxytraining.examinationonline.com/files/76010652546.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/wikimenixaziw.pdfIn PDF document text
    • https://prestinieurope.com/userfiles/files/zuneja.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/kodisekixaxak.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16136e2ce97f59---luzareputifaz.pdfIn PDF document text
    • http://web5gstore.com/Files/files/faxafunosogodipimetam.pdfIn PDF document text
    • http://dejede.com/userfiles/file/lolekenov.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614160b68b16b---fadavoladunipujubitugifur.pdfIn PDF document text
    • https://stcc-sa.com/motakamel/Ups/files/97415943912.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210907215333_304667016.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/javupezoge.pdfIn PDF document text
    • http://newo.ru/files/files/zakopuvujexuluwoginujuvux.pdfIn PDF document text
    • http://robertoantoniz.com/resources/original/file/saxesojegudakodize.pdfIn PDF document text
    • http://baheth24aqari.com/ckfinder/userfiles/files/ruposi.pdfIn PDF document text
    • https://eghamatsafar.ir/basefile/eghamatsafar/files/tivogovup.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/cb8aed8e7877a98d434825c570e2a55d/tojijad.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/rozen.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.fr/userfiles/file/mopesow.pdfIn PDF document text
    • http://eventclub.pl/userfiles/file/42695069332.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/26432010447.pdfIn PDF document text
    • https://nullemont.fr/nullemont/ckfinder/userfiles/files/lugelosipefolegujide.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=boruto+episode+200+full+episodePDF 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_off0000e49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49C 19352 bytes
SHA-256: d467d1c8f918bd521caf8ef25203507c13c750fb5dccda8c6488eb61ff7c1816
font_01_sfnt_off0001177c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1177C 10620 bytes
SHA-256: 680e325fcedcfb536688270fea0c172252562f8365ef695265d661f8f7c7525c
font_02_sfnt_off00012ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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