Malicious PDF — malware analysis report

Static analysis result for SHA-256 a67fc6c13f8fb7ff…

MALICIOUS

PDF

80.8 KB Created: 2021-09-20 00:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: e651da21c4db9b21da498f55c5b64d2f SHA-1: 39e23fa644f91fb79c6ac363967d328dbd7c9114 SHA-256: a67fc6c13f8fb7ff8cfca5adc532a3ff88a832ac5b5944547c2fa65ff798e710
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised websites or disposable domains, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://irlanc.ru/uplcv?utm_term=galaxy+life+download+android PDF link annotation
    • http://lavalnerina.it/userfiles/file/jawojijikimit.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/161354954b9640---runazamudo.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/zivaxerinenepefedexewid.pdfIn PDF document text
    • http://www.novosib-sport.ru/ckfinder/userfiles/files/bimomofepemajogofumupito.pdfIn PDF document text
    • http://www.klimavill.com/data/editorfile/67492382199.pdfIn PDF document text
    • http://machinegroup.ru/img/outer/files/labugizifuba.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/70eed6ac0620c6daab81d72422614e27/88959535044.pdfIn PDF document text
    • http://pescepiana.eu/userfiles/files/55963562920.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/96406022ed02724c65ae9c25206e360d/dinelibewafesapeduven.pdfIn PDF document text
    • http://klusjesindex.nl/images/uploads/lagonaf.pdfIn PDF document text
    • http://ristoranteibucanieri.it/userfiles/files/80177502827.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1613fcf203c2c2---namisoxawuxer.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/86520618524.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1614676cd09219---simapuneduz.pdfIn PDF document text
    • http://ngocphuocjsc.com/public/default/ckeditor/files/pesas.pdfIn PDF document text
    • https://kawanmto.net/contents/files/novunisenolupodarudozopi.pdfIn PDF document text
    • http://eau-msu.ru/ckfinder/userfiles/files/974787124.pdfIn PDF document text
    • http://teranor.com/ckfinder/userfiles/files/xulijodesutomeduwupofax.pdfIn PDF document text
    • http://werkschoenenverkoop.nl/images/docman/files/15417713410.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16146d6e17bc1e---posofabuza.pdfIn PDF document text
    • http://all-premium.com/user_file/files/85213642912.pdfIn PDF document text
    • http://interroadholland.nl/userfiles/file/xofumusideja.pdfIn PDF document text
    • http://attlas.center/userfiles/file/dapufitonukuzibomur.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/82744676645.pdfIn PDF document text
    • 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_off0000dab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB5 10420 bytes
SHA-256: e15e0a0f10faca966ac8d564745642768f10aab5cb093c31bed3fda27f4d4f03
font_01_sfnt_off0000f281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF281 16616 bytes
SHA-256: 9ac446b52e9ee52ab3d9318d790268b7fc9a283b28938573286b4757afd1992e
font_02_sfnt_off00011d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D98 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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