Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe254d05eee33e53…

MALICIOUS

PDF

83.8 KB Created: 2021-07-31 19:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1071c71a84b32dbfcb1b6885aceffde5 SHA-1: b626c3f9609aafa24f70b770e4578caa848837b5 SHA-256: fe254d05eee33e53ee7b07a1a72928ae96204c97b3a0c381a2eb70e8a157ccb3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm on disposable hosting, with multiple URLs pointing to compromised WordPress upload directories. These findings suggest the PDF is designed to redirect users to potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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 https://oniceh.ru/uplcv?utm_term=lecciones+de+frances+para+principiantes+pdf PDF link annotation
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95db7a2eca---27344155718.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d867abb97---15412699547.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210609021425.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/22042354763.pdfIn PDF document text
    • http://smeclassof1987reunion.com/clients/37165/File/dexubivepevokobuwi.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e08d229c10---1639741685.pdfIn PDF document text
    • https://agermag.ro/mm/file/76627955864.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/gekotevudode.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/tp7bcc2rqlgjiorphccdbq7364/butewatezafex.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1609b558e0ffd5---71700627299.pdfIn PDF document text
    • http://lafayetteconnections.com/clients/52818/File/95681065069.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/69i9q81klf2cjj4uo0r02oims9/52423527922.pdfIn PDF document text
    • http://jingluo.net/uploadfiles/files/69776134972.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/32bb05b09ac344741e79c97c18f9ec26/48048684758.pdfIn PDF document text
    • http://tcihk.com/userfiles/87719691812.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/09022101382.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3820a45f6---76961073484.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f3f3ccc115---84646985367.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/2ecd5c8d043cdb27c58c27e81ca86dfc/79488653937.pdfIn PDF document text
    • https://rmp-familienanzeigen.de/cms/files/38615823640.pdfIn PDF document text
    • http://www.saito-ken.jp/userdata/file/22019500324.pdfIn PDF document text
    • http://strategie-online.net/catalogue_dynamique/file/lititeledus.pdfIn PDF document text
    • https://viboot.com/ckfinder/userfiles/files/75075641331.pdfIn PDF document text
    • http://hkbroadwin.com/userfiles/5523979725.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d49db3ad7e---kewasoxoros.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6664d6456---94898714522.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_off0000e04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04C 18544 bytes
SHA-256: 2c540a951d9d0a627a1c9135fe7c5ca92c519e276f9fc36a3d1eb183278295b9
font_01_sfnt_off00010eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFF 10524 bytes
SHA-256: a9f77fad4b7313d7a78d637f1483a4782689486d8adc29bf08b9f7603c8831ee
font_02_sfnt_off00012714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12714 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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