Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e3484b8a45f529…

MALICIOUS

PDF

80.6 KB Created: 2021-03-09 13:23:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 16b83f437c513c99b8fe28b034e9d151 SHA-1: 55a0ca3894fbe7e92a434618c708c761b2ff72a7 SHA-256: 30e3484b8a45f529567700d5917799a1db730644fac9de0c42f661ce28086ebf
126 Risk Score

Malware Insights

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

The PDF contains multiple external URIs, with a primary focus on 'fokemale.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites.

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://fokemale.ru/award?keyword=difference+between+am+and+fm+modulation+pdf PDF link annotation
    • https://sawotulexude.weebly.com/uploads/1/3/5/2/135298589/959436182b.pdfIn PDF document text
    • http://jgndegs.info/801645547839gsle.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/1vjgShd/tron_light_cycle_coaster_magic_kingdom.pdfIn PDF document text
    • http://santaparker.store/walukurubozoguburos614.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412896/normal_601314e11daa8.pdfIn PDF document text
    • http://smartcreditcheck.info/how_long_to_row_a_marathonq9f61.pdfIn PDF document text
    • https://cdn.sqhk.co/rajosibakulu/gfJnggT/stor_mor_self_storage.pdfIn PDF document text
    • https://taxupati.weebly.com/uploads/1/3/4/8/134891344/9158458.pdfIn PDF document text
    • https://wusedutewaxugag.weebly.com/uploads/1/3/1/4/131437839/d761e357f06a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379851/normal_6036b20164c47.pdfIn PDF document text
    • http://cg-designer.xyz/3682181576f1g4k.pdfIn PDF document text
    • http://kawlites.online/engineering_mechanics_dynamics_9th_editioneizcv.pdfIn PDF document text
    • http://meblik.su/browning_auto_5_friction_ring_setupet32b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366044/normal_5ffc55eed23a8.pdfIn PDF document text
    • http://circleshtang.xyz/93295738957e9daa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414848/normal_5fcd9dc226716.pdfIn PDF document text
    • https://vemugalibi.weebly.com/uploads/1/3/4/4/134484787/866267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373240/normal_5fdb7c43629c9.pdfIn PDF document text
    • http://sokfresh.fun/apk_drone_view_official_mobile_legend9hche.pdfIn PDF document text
    • http://smartradiobf.ru/depreciation_balance_sheet_vs_income_statementszj1n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://9db8f275-5044-409a-aa1b-3306d9dda9bd.filesusr.com/ugd/361f4b_a916166d8069446a81caf77a49ec1cb8.pdf?index=trueIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_f2ed7941a022426193f6878600dfd949.pdf?index=trueIn PDF document text
    • https://6b9ff03a-ef48-417a-a14c-919df0f903d0.filesusr.com/ugd/f459ea_8634adf16d474846a1d9457585c8b36e.pdf?index=trueIn PDF document text
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_030c68baa1e84c0bb58c24373d66cd74.pdf?index=trueIn PDF document text
    • https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_f7fa5559ea7e4d13982a9e4cd5570c08.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF151 5236 bytes
SHA-256: f585daacac5e4d67ec808d3d49eade4c6b1958a389cc01d7dc3a8421fb9830c9
font_01_sfnt_off0001030f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030F 10356 bytes
SHA-256: b039861b765697e4f3844a59aeb4f387925e4998578e66334fa1d24de152446e
font_02_sfnt_off00012686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12686 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2