Malicious PDF — malware analysis report

Static analysis result for SHA-256 967ef49c1e679997…

MALICIOUS

PDF

91.4 KB Created: 2021-07-29 18:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 3f853ae755b845daf3e6315a10d11990 SHA-1: 5d5b23ed443bb1b7dbbefce63eeb8e1161b6a962 SHA-256: 967ef49c1e679997901094f13730547bf8b73132ad1f55ee42885cbf07cbd319
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised CMS upload directories, suggesting an attempt to lure users to malicious or compromised sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or link-farming attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://almoheetmanpower.com/public_html/userfiles/file/43431264656.pdf In PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/zodonudasipa.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/fafujobapi.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/49248772186.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/tshb7kn1hv7n6b423tbnbjeod3/ziranebafavopifo.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/27013263302.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210503195239164.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/dejipijuviregupowakovum.pdfIn PDF document text
    • http://ranahytta.com/ckfinder/userfiles/files/80209969098.pdfIn PDF document text
    • http://szpital-sulecin.pl/images/fckfiles/file/73980181010.pdfIn PDF document text
    • http://fernandopelosini.it/userfiles/files/lomafuvepulosuxiserifeba.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608dce0142767---71030725344.pdfIn PDF document text
    • http://jr-bang.com/uploadfiles/20210626194933.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/cb299db68f31e6837c2120e49f3752f8/keporedabisewonewazojuwi.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/hdoa607nfmstiq0pffjgd6lq2e/93264490868.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/643916654.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/64de7b3a75ff2ea3743813637ddd37b9/80296688322.pdfIn PDF document text
    • http://daeryuhealthcare.com/ckupload/files/pupatusof.pdfIn PDF document text
    • https://steklo-shik.ru/userfiles/file/23508908357.pdfIn PDF document text
    • http://dui-antidote.net/images/userfiles/file/jamonozodabobupegivujiwe.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/7gde8b8h017ps8a96eaqd2jb9s/rorukixarozu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+get+100+diamonds+in+free+fire+without+top+upPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001000f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000F 11248 bytes
SHA-256: c7349f3f6c4e2731ab7bd5a6d807ba7974da5ccdad6629765058ecc5404f3e28
font_01_sfnt_off00011a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13230 17076 bytes
SHA-256: 9663b70127877d62ed2e9fd0a0a518d6709395e7ac8650439abcd8801f8f8881

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