Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b447b82bb29424d…

MALICIOUS

PDF

67.5 KB Created: 2021-03-08 10:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01f538611113488f7d001b5ecaf6a54c SHA-1: 58e642c6a78455aa878414ad1096f668250b3586 SHA-256: 1b447b82bb29424d3383dc99ae6bb3977458a542a813eb140636992774a965cc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=physics+worksheet+lesson+14+momentum+and+impulse+answers PDF link annotation
    • https://benevegavevu.weebly.com/uploads/1/3/4/5/134501748/sirovadinit-weverozeboxo-xopesadususu-sobona.pdfIn PDF document text
    • https://sasofisapen.weebly.com/uploads/1/3/4/5/134590640/bezoliwem.pdfIn PDF document text
    • https://fefokivaz.weebly.com/uploads/1/3/0/7/130776727/togezitu.pdfIn PDF document text
    • https://vobokalonumenu.weebly.com/uploads/1/3/4/6/134656332/2946706.pdfIn PDF document text
    • https://gejabadofezeda.weebly.com/uploads/1/3/2/6/132681436/7bd0596d.pdfIn PDF document text
    • http://kipiluzebeguluj.iblogger.org/66130038227.pdfIn PDF document text
    • https://zivazumuwekaf.weebly.com/uploads/1/3/2/6/132695746/6990237.pdfIn PDF document text
    • https://vizosajigu.weebly.com/uploads/1/3/1/3/131381839/fatitovadinu.pdfIn PDF document text
    • https://vakogupomuniv.weebly.com/uploads/1/3/4/6/134610568/6093dbd2e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bemisiba.epizy.com/ibm_app_connect_enterprise.pdfIn PDF document text
    • http://gogewarixisude.epizy.com/jnc_8_hypertension_guideline_algorithm_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/431f866b-d94e-4148-9f31-1edf496a1416/big_fish_games_manager_installieren.pdfIn PDF document text
    • https://254b3b0b-79dc-4992-827c-fd4bb3db3178.filesusr.com/ugd/f515ca_2fada6b2eb0345e596b88fd9c8694881.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/67f8d5e0-1010-49f5-be31-1f6bd8a55329/asp_net_mvc_4_download.pdfIn PDF document text
    • http://wuvelar.epizy.com/how_to_activate_windows_10_on_acer_laptop.pdfIn PDF document text
    • https://7e073981-ad1c-4081-8dc0-76946ba36063.filesusr.com/ugd/c4f63d_03c4c16897cd4477b846ed21f0c82770.pdf?index=trueIn PDF document text
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_7d757f3feb2843c2a32aed31c5f6635c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2f111c3-48f8-4d13-a8c5-8128845fe2db/inteligencia_emocional_libro_completo.pdfIn PDF document text
    • http://dipuxalukogi.rf.gd/elimination_reaction_of_alkyl_halides.pdfIn PDF document text
    • http://soxekig.epizy.com/47141943532.pdfIn PDF document text
    • https://1b53f64c-3596-40ff-86ea-95cec8902569.filesusr.com/ugd/838e7e_a301066033494b948fd9156da25a3188.pdf?index=trueIn PDF document text
    • http://pixagikaw.epizy.com/what_is_gods_perspective_on_marriage.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB17 5712 bytes
SHA-256: 76ae220aaaa580bc3ac4ad20ca42d70cf0b594798559d51edb5d2b97c5d96f8a
font_01_sfnt_off0000de82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE82 9840 bytes
SHA-256: 438f414471db5ba8e45719df2269a96dd545cb0f21536062ea05a5a74fd22e4a

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