Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e411db5b854d30e…

MALICIOUS

PDF

208.2 KB Created: 2021-07-20 10:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 8325613b3a75f96a933a15b66a44d3e0 SHA-1: b5156e318690d0da1646851b905da42525c36d37 SHA-256: 7e411db5b854d30e1f25f25ffc7ac4f0b9ca7818d987d1b6b57c0d2a5a871dae
166 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a phishing lure, utilizing a link farm and SEO redirector to point to a compromised WordPress upload. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs suggest an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9046

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://gld-lining.com/user_img/files/fabekuvugiforidexafowena.pdf In PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160868cb9500cb---15587906996.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/guvawamudulaguvavejaf.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/283e5316b974dgn0tsm2b4d9g5/lewemojun.pdfIn PDF document text
    • https://lesfeesdelhetre.fr/upload/files/51749212682.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/3c6a9f27b91391cbbf03ec43ca8913d0/20740995193.pdfIn PDF document text
    • https://cosmopolitanhotel.eu/uploads/wysiwyg/files/kerasiloduzufipem.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c2dcf908985---82631061403.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607022aa0365e---54001442234.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a868836c505---97009783401.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4572c9192b---xowaxurefibebuvulemix.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/41012ac4602501fd025a373dcaeda25e/81516443267.pdfIn PDF document text
    • http://detaycopymatbaa.com/userfiles/file/wilovetexilaredi.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/muvefijizuxugen.pdfIn PDF document text
    • http://photonart.nl/phpcmsys/file/55703262615.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/2a4dc5a84b7a65324e3bb89cec8d5ba9/73187812569.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/f4933f2a6458f3c94015618960bb9e4d/vekusejorekutaro.pdfIn PDF document text
    • http://carrozzeriardue.it/userfiles/files/4346673871.pdfIn PDF document text
    • http://bet-balance.com/userfiles/file/89855835862.pdfIn PDF document text
    • https://mttrasportisrl.it/dati/upload/file/xebigajuxakimusin.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/08054867eac83be60170fa8a430d2e18/40469556262.pdfIn PDF document text
    • http://viral-list-monster.com/ckfinder/userfiles/publics/files/47755086878.pdfIn PDF document text
    • http://energo-winstal.pl/userfiles/file/10675272461.pdfIn PDF document text
    • http://hotelstrack.com/bot/ckfinder/uf/files/kobasozivubekabi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=all+of+naruto+in+orderPDF 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DD1 10260 bytes
SHA-256: e7a8b6a95130b0a3834bfd625834f25174de63dbbdc78757685745c8eb2307f2
font_01_sfnt_off0001a4fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A4FA 18928 bytes
SHA-256: 5aae81d57f625646996aaf4dc76423e12ca61f1d0ad32cf75cc409994352a086
font_02_sfnt_off0001d5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D5A0 126912 bytes
SHA-256: cfd8c4e141f9b0d6e2ab5a882175056789e6debd407800f051258046110a4ccb
font_03_sfnt_off00031a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A8B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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