Malicious PDF — malware analysis report

Static analysis result for SHA-256 38421df4d54389ae…

MALICIOUS

PDF

81.3 KB Created: 2021-05-13 23:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 742999e9c834789bdc8d0b1fa3efbf40 SHA-1: 7c47fde4ce8e6b29edcd23f770868639ff0fafe0 SHA-256: 38421df4d54389ae306b082f73f0b776f68ded048f1504dc375f0be6ba9dd843
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded URLs, with one specifically referencing 'renew my driver's license online ny'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing. The PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious websites for credential harvesting or other scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=renew+my+driver%2527s+license+online+ny
    • https://cdn-cms.f-static.net/uploads/4482645/normal_604df44b7f785.pdf
    • http://vitetoka.scienceontheweb.net/zakivubab.pdf
    • https://cdn-cms.f-static.net/uploads/4473642/normal_601ce0e55dd37.pdf
    • http://figuxovutofid.mygamesonline.org/85373794578.pdf
    • http://nunesop.scienceontheweb.net/how_much_does_a_skyjack_weight.pdf
    • https://cdn-cms.f-static.net/uploads/4373511/normal_604e90c3a2939.pdf
    • http://guzexesuge.mypressonline.com/william_burroughs_blade_runner.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3d62cc7d-00a0-41be-aac5-c776b87e9dc3/63566731115.pdf
    • https://s3.amazonaws.com/gixawetopoli/learning_teaching_third_edition_by_jim_scrivener_macmillan_2011.pdf
    • https://457cefd1-268f-49c0-9ca4-ced5ac281e6b.filesusr.com/ugd/983758_10feb24b819e433d8af54be62f3e2bc2.pdf?index=true
    • https://s3.amazonaws.com/warapagefasovi/72820156422.pdf
    • https://a95edb9d-21e5-46e4-bb1b-b1fdf66a5dae.filesusr.com/ugd/09e34a_9bb469ad907c4b94b2308725c17bbde8.pdf?index=true
    • https://2571d5ef-7130-409a-b87d-c3fd18a83f30.filesusr.com/ugd/71fc55_c2010b5fe2e94fa2b66d5bec51e35cd1.pdf?index=true
    • https://413f70bc-0247-4a04-a3fc-eabb14e2b93f.filesusr.com/ugd/f18ee6_c2ea792677bd42babe9f6cc46e2fa412.pdf?index=true
    • https://631ffb88-cf2d-4844-8d6b-9338a1b21cc5.filesusr.com/ugd/d24e6f_d582ec4366f44aa18d3bdc6dc580ba29.pdf?index=true
    • https://uploads.strikinglycdn.com/files/397bd37a-571b-45f9-ab16-ce4988c09689/fexur.pdf
    • https://uploads.strikinglycdn.com/files/c60d2b99-8627-4975-8071-20170e859a68/94316228020.pdf
    • https://s3.amazonaws.com/tubupejevomo/internet_connection_speed_test_software_free.pdf
    • https://58fabbca-0322-4868-a582-948aa19840f9.filesusr.com/ugd/93748c_6dcd1107402645e7a3f48c850a31588a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d1ad0cdb-c0bd-4024-93ff-076e340181b1/whirlpool_wmh31017as_microwave.pdf
    • https://650c977b-0274-48a2-8498-43c0efc39f4e.filesusr.com/ugd/dbad32_c113d92c0594436eaddfbec117119a2b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8f7e83c9-159e-4576-a589-fb9561064844/sobujop.pdf
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_bb4db3480b724ff5b09cc2d30dc6a418.pdf?index=true
    • https://s3.amazonaws.com/tanapilamaxi/horizontal_scrollview_dynamic_android.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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f247.bin
223d8a17df14192669f14fbd7026de99e8a9a0b9eafef32f9e70cecbe73ae2b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF247 4876 bytes
font_01_sfnt_off000102d2.bin
5ac812b2e2a80501ab58232b85540aac5267922b66f8a5249c69625b48e90560
pdf-font-stream PDF embedded font (sfnt) at offset 0x102D2 10800 bytes
font_02_sfnt_off000127db.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x127DB 4324 bytes