Malicious PDF — malware analysis report

Static analysis result for SHA-256 80486975141375f6…

MALICIOUS

PDF

72.7 KB Created: 2021-06-28 01:07:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2eba32feb0c267766ac9fa0eb11b5bdf SHA-1: f3b54220c93de34655dd135adc72f9fef44ebd4a SHA-256: 80486975141375f6f69cc9d4f43e7131199c61a3978f405bc8aa0b39d7f0fa68
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 and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links pointing to compromised WordPress sites and disposable domains, suggesting it is used to redirect users to malicious content. The presence of external URI links and link farm characteristics indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://garglob.ru/uplcv?utm_term=reshape+long+to+wide+in+r
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/a7lcvkj7b7oqgk98ucv8qt0pr6/29986637616.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3f8fa91991---gifelikexosenolumugo.pdf
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160afa377b3755---28503270309.pdf
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/d416e79e6d28975bc0e8bbd7d9a3731f/61387744916.pdf
    • http://sahrugs.com/userfiles/file/20105244183.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/d0b1aa8a24029179c3217ee58d12d16e/dajekukujudopuvuvi.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac356b3c104---68022882893.pdf
    • http://zuche0551.com/upload/file/77383891466.pdf
    • http://andlupa.com/userfiles/file/fetojemav.pdf
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/2efb1c16223de61a647fb0477bcb4d76/59281353133.pdf
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/72f65c944d1ce15644e3e5201643dc64/49274219798.pdf
    • https://fl-forever.com/upfiles/editor/files/fudezari.pdf
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bbbe49a7ea4---totunep.pdf
    • http://dzbnf.com/upload/file///50140034122.pdf
    • http://abacusnancy.com/userfiles/file/tesaxasigudisesaxasosakog.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cb7656a6013---bujuf.pdf
    • http://capital96.com/userfiles/file/86761332140.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/60mkolf20dkpg93rapau0p7b40/5885152832.pdf
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/b4458cf4515fbc1f6d0de3bc0a0d40fc/71461938926.pdf
    • http://aftckwt.com/uploads/file/37277865429.pdf
    • http://yacpa.org/yacpafiles/file/95081116955.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806f68b1ca1---bejojemevela.pdf
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/70b475dff4ce1160f2228485e2d3ee85/wupijodajosokodidaw.pdf
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/1s1a033nbsc1d8h0o7p1okmao3/95248367511.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b4fc5ae92---78876410537.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_off0000bc0a.bin
4acc2e25c3311046b85b1185b3a6f5a0f959331fe602804a51379d50c540b1d5
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0A 16000 bytes
font_01_sfnt_off0000e4ec.bin
248ac5adc44d688ab48b60adafd77fd21cfd4fccd74403873ffa387ccb58dba0
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EC 10800 bytes
font_02_sfnt_off0000fda6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA6 16792 bytes