Malicious PDF — malware analysis report

Static analysis result for SHA-256 d214515902a4a59b…

MALICIOUS

PDF

80.1 KB Created: 2021-05-10 15:28:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e99cee560412a781410957e0c716042c SHA-1: da0e3fcae8907839287f72fd55ff6767414989d8 SHA-256: d214515902a4a59bdf036ac5d18df068d46e5a143a0d7da7e5f7d1b0fa3acea8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9964

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://jacksth.ru/strik?utm_term=how+much+is+an+ace+worth+in+blackjack PDF link annotation
    • http://nidewopovuwubo.mypressonline.com/we_are_all_completely_beside_ourselves_quotes.pdfIn PDF document text
    • http://like-store.site/38460454259p47z.pdfIn PDF document text
    • http://tamasolesodaj.mypressonline.com/vimemabalivedilebes.pdfIn PDF document text
    • http://helplnstagram-confirm.com/gangstar_mv_original_copy_apkcayjx.pdfIn PDF document text
    • http://pifanaliriwabo.mygamesonline.org/1468953904.pdfIn PDF document text
    • https://cdn.sqhk.co/sifolilo/2Uiiwgi/windows_lock_screen_password_reset.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447253/normal_5ff93a2b8a56a.pdfIn PDF document text
    • http://arthromedshop.xyz/82882932961g158c.pdfIn PDF document text
    • http://fashion-deals.xyz/venixumunitopomik72ri.pdfIn PDF document text
    • http://easterthjg.com/matogadhj8k.pdfIn PDF document text
    • https://cdn.sqhk.co/xojurolaruk/iFFYBjc/megefira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368760/normal_6031e51e13b9d.pdfIn PDF document text
    • http://handler-autoscout24.com/siposakoravogedixiwo9bjbr.pdfIn PDF document text
    • http://strapslap.online/zoderuvutuzizaledafw1zl.pdfIn PDF document text
    • https://cdn.sqhk.co/davusegeb/hLSidhj/doodle_jump_world_record_2018.pdfIn PDF document text
    • http://autobaff.xyz/xemavakovutunagenotoju4qg33.pdfIn PDF document text
    • https://cdn.sqhk.co/madufuxenuw/1V4sMhf/32433138318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_60338a84e79fe.pdfIn PDF document text
    • http://trylait.club/49272912178nqmt4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476001/normal_605434c0ed0ac.pdfIn PDF document text
    • http://dostafood.xyz/modernist_cuisine_bread_espaol9591m.pdfIn PDF document text
    • http://megiloreb.mypressonline.com/2491539743.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://95fbbc11-640f-4658-acdf-6e09da746871.filesusr.com/ugd/e42ee3_ba6dde63660c4792861d71ecbb40ac03.pdf?index=trueIn PDF document text
    • https://1c684d3d-b1aa-4d58-8f8e-408f9cf37fac.filesusr.com/ugd/64d889_c5d9dba4bf964f6387c1b30205f94549.pdf?index=trueIn PDF document text
    • https://d9c73feb-c945-4d97-9d44-ff62a4b57c47.filesusr.com/ugd/12056e_ee186b1d9c994e5fa815c664cced7438.pdf?index=trueIn PDF document text
    • https://fecd0c08-032d-4b8b-b26c-6108aca7a00f.filesusr.com/ugd/a87c8b_df330b84a0dc49d1885a9c41a77fe198.pdf?index=trueIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_46060fb67f6148eb9345d96fc574a237.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6D 5372 bytes
SHA-256: 2f91d30247074c823497cadf7aa1e1ea509f5768844ab2969220a255913ae42b
font_01_sfnt_off00010c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C98 11220 bytes
SHA-256: 6ed9fc0eba7939a9b7d8213e15b13b446976932625dd46e6746f2d873222df36

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