Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4e38df6fbac0256…

MALICIOUS

PDF

89.1 KB Created: 2021-06-28 15:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 8b8ea5b4e3ae99615e385e19d43a2a3e SHA-1: b9c9058e074cd9b0b196f2c3ca77a65897c1a3a7 SHA-256: f4e38df6fbac0256e2e2a819b93a946be203ff919759a96bf8763e454080cb96
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous embedded URLs that point to compromised websites. These links likely lead to further malicious content or phishing pages, aiming to trick users into divulging sensitive information or downloading additional malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://aaaexpressheating.com/userfiles/file/lepovuboguzuk.pdf In PDF document text
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/6ea99363fd8b7ab7e3c26ae087298c45/48673962343.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/5f43bc898ed3bf8254da266dd4eb7d20/58692318450.pdfIn PDF document text
    • http://tz5168.com/uploadfile/image/2021/06/03/file/20210603_034448_106.pdfIn PDF document text
    • http://pinturasoltra.com/images/slider/files/28513762949.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/77427975513.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a9cbdbb68---59088251274.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/ce5820323139977fef04cb13b392b3ed/93559217035.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed36f27e4b---kuzabariwipegipogil.pdfIn PDF document text
    • http://cl-pub.com/files/files/muluzupiz.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb9a1e9ce3---54342630477.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160866bae98f9f---nulasori.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/woxalimeg.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/6009df840b8f547f8cd5bbe3a9a64c5d/18396195477.pdfIn PDF document text
    • http://planetamama.ru/files/file/92612170168.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a1a346b10---lizolu.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/828ddbb366bfbd0bb8b14e75f06aebdb/tomoki.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1608c04ec92c68---8262700053.pdfIn PDF document text
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/wilevax.pdfIn PDF document text
    • http://linklandhotels.com/upfile/editor/files/komodoliwodaxo.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/60379774089.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/a9713fe6c911533162e950e6ba307dd1/35874551965.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/3ed1c211481747b4840c86d63fa7dc1f/jokojivenalujos.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/jajet.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0114f8514d---29968077023.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a637d900737---25655151498.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=richest+female+basketball+playerPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f96e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96E 17000 bytes
SHA-256: d555f659d5149b75913ab60e7f2655948a8df986d84ff7c71ce3eee5e029182c
font_01_sfnt_off0001258c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DA3 10912 bytes
SHA-256: 424609b8540b5389bfbd0236c051872104651fa5a5aae834180f5435b2d2e331

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