Malicious PDF — malware analysis report

Static analysis result for SHA-256 044046bfd0aa7f7b…

MALICIOUS

PDF

83.8 KB Created: 2021-09-02 05:57:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: fde607950c44538b797a14cce04bc204 SHA-1: 3e6c6335c860d12c0c0ecc6cb24f51d9f627e8bd SHA-256: 044046bfd0aa7f7bc325733593ffa89fb5498cac98fcf656ec9af0324965381b
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 6

  • 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.
  • 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://service-panev.com/userfiles/38801938647.pdf In PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612b40930d847---fazetemubunuboj.pdfIn PDF document text
    • http://ahchala.com/img/file/53915356427.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/f9klkf2eme52gvkmpp0me8ncvi/58130961349.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/ecce0fbb8f3767852675114bd5fcfa62/6293852397.pdfIn PDF document text
    • https://bataretak.com/img/files/file/56137876218.pdfIn PDF document text
    • http://atek-ent.com/upload/file/48316754465.pdfIn PDF document text
    • http://relocationservicesgroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160716ea4f13a0---91417815907.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/k4tspu56j72mit0chct7i3f5mt/wipuzi.pdfIn PDF document text
    • http://parentini.it/userfiles/files/nesosopuwofowaledoto.pdfIn PDF document text
    • http://saokienviet.com/uploads/image/files/verilapexodumetudonasoj.pdfIn PDF document text
    • http://vitrine-prof.com/files/90973260980.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610cc722de311---92634476461.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/jelimeruvozerifefowopokox.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/52890708348.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1611cd48f98407---5020686834.pdfIn PDF document text
    • https://empresa-venta.hr/files/dikosojadedasiwibul.pdfIn PDF document text
    • https://almudenafernandez.co/ckfinder/userfiles/Files/86807761624.pdfIn PDF document text
    • http://unityproductions.com/upload/files/36706283279.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/pegasiwigipapimi.pdfIn PDF document text
    • http://nenorm.com/files/files/magotorolupat.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/e19e6471d954897b0b6b27dbc645bd5c/29184978885.pdfIn PDF document text
    • https://samsungklimalar.com/upload/ckfinder/files/35508186407.pdfIn PDF document text
    • http://zpb-maciejewski.pl/upload/fck/file/gekoxigevidawufuxepume.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=boxing+day+2020+datePDF 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_off0000e36a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36A 17408 bytes
SHA-256: 2efa5dfa05e1874efff8b8244df4420fc8102b8908c259d3f4b8ea5aca2d1c86
font_01_sfnt_off000110a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000128b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128B8 10620 bytes
SHA-256: 13e42824927bc6440c1dc97bd914e10c9af50f33e0850ab3a44f3ae5cb4b40c8

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