Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00f4eda7bfc2b65…

MALICIOUS

PDF

68.6 KB Created: 2021-04-19 21:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d0971f2f54a5d8409c79a4c1a191d6c3 SHA-1: ca41bb4bfc1e95c8df7367f9ec5eb6945bfd07f8 SHA-256: e00f4eda7bfc2b653f14326a09532de5c83506d9210f2af1ba22bebcd2ed2008
184 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9227

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 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
  • 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://pelibifir.ru/strik?utm_term=black+powder+red+earth+rifle PDF link annotation
    • https://fapusazi.weebly.com/uploads/1/3/4/8/134849501/9587867.pdfIn PDF document text
    • http://wusator.mygamesonline.org/automate_convert_excel_to.pdfIn PDF document text
    • https://jilarikogezinuv.weebly.com/uploads/1/3/0/9/130969280/1853165.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/how_to_read_a_welders_blueprint.pdfIn PDF document text
    • https://nifatukipukixe.weebly.com/uploads/1/3/1/3/131398430/sejoji.pdfIn PDF document text
    • http://5coupons.info/givolulefoex99h.pdfIn PDF document text
    • http://mibejar.sportsontheweb.net/electrical_autocad_blocks_library_free_download.pdfIn PDF document text
    • http://kersita.space/xesuvudibugisibutajonak6rg1.pdfIn PDF document text
    • https://parudebizaju.weebly.com/uploads/1/3/4/0/134096066/feb4df2.pdfIn PDF document text
    • https://zopodiwozexuma.weebly.com/uploads/1/3/4/7/134737972/lokusezabug.pdfIn PDF document text
    • https://kofoxutekibefa.weebly.com/uploads/1/3/1/4/131454286/joremovisapim.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/majadibixeled.pdfIn PDF document text
    • http://kalavar.xyz/html5_android_back_button477du.pdfIn PDF document text
    • https://waperimawomexav.weebly.com/uploads/1/3/4/7/134733778/muvasujikaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_c85bf54e2f7d4786b71c22e058aca17c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/falejogajir/47431575142.pdfIn PDF document text
    • https://93a2b5bb-aecd-41dc-861f-07dcdefec443.filesusr.com/ugd/dee83c_b48384467048437db995f0a14661a88b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/alps_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/nook_hd_7_charging_cable.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/cabinet_battle_1_lyrics.pdfIn PDF document text
    • https://dca540c6-954d-4243-9f09-0921753db957.filesusr.com/ugd/974a4e_e2997eedf3774869b8f5b343dea1a859.pdf?index=trueIn PDF document text
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_6c4de28f45a84d9d96def86a2dee8cfd.pdf?index=trueIn PDF document text
    • https://43dda2ad-fadc-418c-a2d5-4b96cca2ed60.filesusr.com/ugd/6eca9c_0f29db14bd6a4d4ba1b73ff150c1c1f4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/47788083148.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/linear_programming_algorithm.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0D 5272 bytes
SHA-256: d44afabeb2a99843206c734c01b9ac2ae6231ef1883990977df45e79408481ce

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