Malicious PDF — malware analysis report

Static analysis result for SHA-256 04afc69ec07bceef…

MALICIOUS

PDF

69.2 KB Created: 2021-09-28 22:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 559533f72dbd108ad17bcb9ab210e3e6 SHA-1: f279898bf8c01f82a6ee5443561b978a0b4cfb4c SHA-256: 04afc69ec07bceef4d06ce240cb2bf224b2b38dc3c42d6e9b8731d504847d358
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery. No scripts were extracted, but the presence of multiple external links points to a lure for downloading potentially unwanted or malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://drafthe.ru/uplcv?utm_term=download+du+screen+recorder+mod+apk PDF link annotation
    • http://elmbbq.com/uploads/files/90112706554.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/94035e808ce3fd6a8ab9ae32c5512c35/piworosa.pdfIn PDF document text
    • http://mawaevents.com/uploads/file/73775714364.pdfIn PDF document text
    • http://odpadykj.cz/UserFiles/File/vijodowiwidivimejidit.pdfIn PDF document text
    • http://www.mustwalge.ee/data/content/files/pogukugolegoxikovuku.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/telezawisujejaj.pdfIn PDF document text
    • http://6nergy.fr/6nergy/sites/default/user/file/duvanepemawipesipule.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613916a143dcc---zixugodiripoluporulejos.pdfIn PDF document text
    • http://kargo-box.com/uploads/files/84563142077.pdfIn PDF document text
    • http://szamosiszerviz.hu/feltoltott/files/43689637461.pdfIn PDF document text
    • https://bushregenerators.biz/userfiles/files/96754300521.pdfIn PDF document text
    • http://minerva-collection.net/files/files/95695742380.pdfIn PDF document text
    • http://kmbb.at/userfiles/file/mewaguke.pdfIn PDF document text
    • http://nfraccon.org/userfiles/file/616235697.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161430c4c07b4d---20921799067.pdfIn PDF document text
    • http://vietnam-intraco.com/webroot/img/files/66848732018.pdfIn PDF document text
    • http://bobas24.pl/Upload/file/99979981255.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/jerakukidasotixar.pdfIn PDF document text
    • https://gaziemirkentkonseyi.com/upload/files/16608850453.pdfIn PDF document text
    • http://laiyi-art.com/userfiles/file/89278337975.pdfIn PDF document text
    • http://m3hotels.com/userfiles/file/girobugegavipiwekevejimo.pdfIn PDF document text
    • http://sarkanyhajo.hu/files/file/mozizofuxo.pdfIn PDF document text
    • https://foursservices.com/nbloom/fckuploads/file/24987505207.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1613ef794def26---56823057946.pdfIn PDF document text
    • http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nugaxowanadovejepi.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_off0000afd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EA 10764 bytes
SHA-256: 64b93a17377ad6e5807d5c16369ba0813fcd28cbde20d7202fc55cec8a4ed911
font_02_sfnt_off0000e0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C1 14640 bytes
SHA-256: d88b317f2756015f7c4ae36e9a830b0ad8f55313d3a687815e4273d38f7de870

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