Malicious PDF — malware analysis report

Static analysis result for SHA-256 7279f014493b3207…

MALICIOUS

PDF

97.2 KB Created: 2021-06-25 20:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 27f06faf91691e32781c031cb7116cbb SHA-1: db10d9b4fdad640b905349e6cf955b9f39a11d15 SHA-256: 7279f014493b32074f09dffa57b8830b9f377bc6f17de73c3626b996d8717619
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to websites hosted on compromised WordPress installations and disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/7505643d5ba0f8bb32d6eea494510d13/36204920532.pdf In PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c35d1e401---46232158538.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/11924166320.pdfIn PDF document text
    • http://atrsara.ir/resource/files/67069895427.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4386ad9576b366039691ec14d7c06907/busumudalurasipidiba.pdfIn PDF document text
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/zepomodexajekuwu.pdfIn PDF document text
    • https://wrd13.com/force/file/giwafelobezogafowuwafosa.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075c7d6e386c---11063431002.pdfIn PDF document text
    • https://retta-bg.com/userfiles/55100652919.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/26564039770.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/d5d10311581a2d7e60131e4053693b7b/26929530655.pdfIn PDF document text
    • https://latework.cz/soubory/pagalivo.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5877953137---gudugokizule.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/lirazugaro.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/kcfastg47ag3m7ivpvtri6ktb2/rinoxuwoxidirew.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8589cbf07---21423739279.pdfIn PDF document text
    • https://anup.bo/images/files/83713593161.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/iul7naojmeugo5f12126b8ep8b/91823844776.pdfIn PDF document text
    • http://abpaluso.com/upload/file/99433938202.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/7fc8072bf35627bb20451144e74eaaca/bonakidipewufaroxerab.pdfIn PDF document text
    • http://thegioituigiay.net/uploads/files/52565846217.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=disorderly+conduct+misdemeanorPDF 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_off00011616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11616 17896 bytes
SHA-256: ad5329e6a2d921d7b1776acdbb280c781e317bc396c98b5fff5d722737e77d54
font_01_sfnt_off00014557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14557 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D6E 10744 bytes
SHA-256: 2bda35f03c9dc4f5bf260bc6fec4af5aa6b740f4972a421382f8a6b3cd70af5f

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