Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60da1ced2cbe13f…

MALICIOUS

PDF

92.9 KB Created: 2021-09-06 01:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a4c5cfb4013703857ad1d7bbcf4b4f3c SHA-1: 88f9747baf63b668c12fc6e4cb738fb3851f4894 SHA-256: d60da1ced2cbe13f85c87e9e083d630850b4e217a6a58a780c5655c4acb09de7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable domains. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to deceive or infect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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=normas+da+abnt+em+pdf+2018 PDF link annotation
    • http://windsbs.biz/files/file/nojosagukolunetixidasu.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a932e7c216---vosatiwelaberaloxazefugux.pdfIn PDF document text
    • http://kzlo.pl/fotki/fotki/file/74236259114.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e1f8b90f1f1---20485135663.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16086f16d4e13a---9311113332.pdfIn PDF document text
    • http://budka39.ru/files/17295281941.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/3cgqd2sdtgk0k4dch25vk4rvr2/63630680410.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d36e8e0a994---vopadobexesufaditeguwe.pdfIn PDF document text
    • http://m2mus.ca/clients/b/b1/b1ca46fdb12d68e762e4a8b3318caec0/File/55839177620.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/337756e737e2127252bceed57651880e/34297522787.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/wefuzenadibalidowivor.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2bfe201ce4---kolorigusakipaxapipibumiz.pdfIn PDF document text
    • https://oykufestivali.com/ckfinder/userfiles/files/konivotanisisapeb.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7c5e6eb30---xeruvofok.pdfIn PDF document text
    • http://sms-dk.com/FileData/ckfinder/files/20210817_ECA922B8A1458B4E.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/59826752490.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/3f1c1b999782d66d1841436c9c796f5e/72272947915.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/83bf7aaf0490fd6ae9f745dcc3e63d5e/bonijetodujomume.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/rahif8ccbmm7oiakd06qdlgjac/buxikiruzenabidulojur.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///nisota.pdfIn PDF document text
    • https://phr4u.com/files/27305031572.pdfIn PDF document text
    • https://ekselantechnology.solutions/ckfinder/userfiles/files/sifadewitizafurobajena.pdfIn PDF document text
    • http://ketoanantamhcm.com/uploads/files/mujadaje.pdfIn PDF document text
    • http://amsuatrust.org/survey/userfiles/files/divofasaven.pdfIn PDF document text
    • http://pet.nfe.go.th/m_site/ckfinder/userfiles/files/givuvokolud.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_off0000fcf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF4 11140 bytes
SHA-256: 5f57b8b96a30fa05591566e83ffc0916ecb1b761c2714f2f21b4df7f06b3c049
font_01_sfnt_off000116db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116DB 21420 bytes
SHA-256: 376f045d2340fc04347c6fe26f6e83a6f028116659644dae1f0f6cdd914d7d2d
font_02_sfnt_off00014c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C4E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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