Malicious PDF — malware analysis report

Static analysis result for SHA-256 1deeaf98e7ae090f…

MALICIOUS

PDF

73.0 KB Created: 2021-09-05 19:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2bb96a6ae441520613819591371f1c17 SHA-1: aec84230801ef2ff7da2af2f324346f8d7e1908f SHA-256: 1deeaf98e7ae090f8dc6cffa8fe81060aedd146f6ea00ac8b234a28ec9a8c04a
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs pointing to various websites, many of which are hosted on compromised CMS uploads or disposable domains. The presence of these links suggests the document is intended to redirect users to potentially malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/serojefuzofukatubedenotal.pdf
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/rde2ltbj3291s5ijjjju5494db/49069448918.pdf
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/oadrqj2tbgdodot141krj5cpqr/nuwakifubow.pdf
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/f7qmhin0sv7funppkpiauopcp0/33926531210.pdf
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/mexirosanodom.pdf
    • http://vanhacollection.com/images/files/momukajisilut.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b946a6775e8---71623511922.pdf
    • http://papinchess.ru/userfiles/file/28829387106.pdf
    • https://maconlux.lu/userfiles/files/93961324245.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606c96fe89fd6---75959581564.pdf
    • https://ebooksweb.net/files/file/56984617053.pdf
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847fb651769---gozixukom.pdf
    • http://www.prunay-en-yvelines.fr/ckfinder/userfiles/files/siripezupegevewis.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b63c0cef113---61369870921.pdf
    • https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/ef9dce01b13b2dfba654fb77bc1ccfe8/86957250496.pdf
    • https://tavcam.com/upload/ckfinder/files/3561330998.pdf
    • http://thedreaminitiative.org/Content/Admin/uploads/files/zizopinu.pdf
    • http://hyosangjo.com/userfiles/file/20210627024947.pdf
    • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/40805492994.pdf
    • https://paron-rebondir.com/uploads/files/tofataxibobesewa.pdf
    • https://mediaget.ru/userfiles/files/mijivadinexija.pdf
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160928a157e2f6---20857691090.pdf
    • http://vangphugia.com/userfiles/file/zokefoto.pdf
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210804010943.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/35157cd2ec0bab0781595d1c54578d87/fitosokomuvawagasex.pdf
    • http://dkkarsin.pl/img/upload/files/warajimivadarulalisebamo.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=active+and+passive+voice+examples+for+all+tenses+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be46.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBE46 16792 bytes
font_01_sfnt_off0000d658.bin
23d3c0751e71408c086fb91ca09e3b304add4df2317bd118ef9cc740eb42881a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD658 15156 bytes
font_02_sfnt_off0000fc34.bin
dc50f0e20bbf92383fb408274c001149ce7108a85a54c61591e0111fc2fc5373
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC34 10928 bytes