Malicious PDF — malware analysis report

Static analysis result for SHA-256 294882c401ceb5b5…

MALICIOUS

PDF

85.4 KB Created: 2021-07-06 20:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 8bed34650b80dc8b9cb54e7779f0b0fb SHA-1: 7e1bbd882e8ea55a8e09565212d841c873a911f4 SHA-256: 294882c401ceb5b508483610750e1afc34300037c199012b29e649c8dbc23f2f
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised 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. No scripts were extracted, but the structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ecdcbb097d---61417123143.pdf In PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c85a9c6f8---35921031791.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/nozex.pdfIn PDF document text
    • http://seednseed.com/admin/fckfiles/file/raxawelujolukaberiwin.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/34225521503.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/f40296c721ad534159e70a862eb917a3/galesuranufizotudig.pdfIn PDF document text
    • http://carszana.com/image/upload/File/xepelel.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608afca178bee---xiwov.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c1edb04d602---69312473922.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a75e26c3883---28870218297.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/ae617a3113d82612f3f6f14083888771/95081294308.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1609f44ce0caa8---lamabiretiluxusawuwozage.pdfIn PDF document text
    • http://integrotech.com/zdjecia/file/fimeriterinasif.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202106130256237980.pdfIn PDF document text
    • http://galantemontagnana.it/ckfinder/userfiles/files/zasuxa.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/17a66f78d1dba9c286c2393e3b9899c6/50331749649.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f1a3dbf5e---xagivajolovelawa.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/suzivamo.pdfIn PDF document text
    • http://aqbnb.com/uploadfile/file/21253535396.pdfIn PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/e43e5ba08c5af9018d1bba1b2748d18e/63268548684.pdfIn PDF document text
    • https://esprimagroup.com/userfiles/file/gatujozejedap.pdfIn PDF document text
    • http://standardamulet.com/files/files/86188637620.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/d3e845b068ad91d3b6fee1fc6987e1a0/57083317609.pdfIn PDF document text
    • https://www.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/f11a64da0c58bff69f42178bbb7f1ab0/71141136684.pdfIn PDF document text
    • http://uforoi.com/app/webroot/uploads/files/mawifanaxo.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/boparabadazoxapegivu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=franchise+fee+and+royaltyPDF 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_off0000ea15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA15 10664 bytes
SHA-256: 1caef4fb7eb57f2110bb0f461467f5210d2e4d5e9be0c767998e824f420e5b33
font_01_sfnt_off0001026c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1026C 17028 bytes
SHA-256: 957f75e8d60661e9bc6c5a7a9af36ccfa06d43e52d9d40bf8d9132343b2e00cf
font_02_sfnt_off00012e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E9F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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