Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64a3e07337f2c28…

MALICIOUS

PDF

100.8 KB Created: 2021-03-22 21:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8ab6b2de3bc2991c2a9aa9ac102b912f SHA-1: de06d6c19fbcec305e198a6d2af8a23f593459a5 SHA-256: e64a3e07337f2c28e1472963c012ed3cef5d7d58c3f2ea5d38b472698b6e482b
126 Risk Score

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 0.9985

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://soxebez.ru/wix?keyword=videos+de+risa+de+gatos+nivel+dios PDF link annotation
    • http://smeshnoykir.space/sifegawepenkioa.pdfIn PDF document text
    • http://instapriz24.site/leadership_lessons_of_the_navy_sealsyi5p4.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/ighdjjY/subway_surfers_promo_codes_miami.pdfIn PDF document text
    • http://giboxibefelas.22web.org/53939910630.pdfIn PDF document text
    • https://cdn.sqhk.co/gaduwifawide/hjfPigY/31769211717.pdfIn PDF document text
    • http://thedouche.xyz/755370329368jeg3.pdfIn PDF document text
    • http://reduslim-officialsite.site/nadoxezagoymljx.pdfIn PDF document text
    • https://cdn.sqhk.co/vutowogipu/fggugeA/walk_by_faith_not_by_sight_petra_lyrics.pdfIn PDF document text
    • http://magicwoolshop.com/50_shades_freed_soundtrack_playlist871ah.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/ifjbggO/robotics_companies_in_pittsburgh.pdfIn PDF document text
    • https://cdn.sqhk.co/mapuvokunoj/idoUgcZ/mosujetesebop.pdfIn PDF document text
    • http://yourbigdick.space/210268121994styl.pdfIn PDF document text
    • http://fitnesspack.net/46096990565n3wgy.pdfIn PDF document text
    • http://vukufisoxe.iblogger.org/cerita_untuk_anak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_8ac8aaf907cf42d68da4a82a541f3a3f.pdf?index=trueIn PDF document text
    • http://desozubavoj.epizy.com/how_long_can_a_boiler_last.pdfIn PDF document text
    • http://dejiwupije.epizy.com/zajomazifiwane.pdfIn PDF document text
    • https://ececae0b-1312-4a4c-959a-117928b3d478.filesusr.com/ugd/e6721e_635ad6dc2fcf4bb6a584b099ceef03a7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a5e8eec-8378-4d9d-ba22-15e0d3ea185c/imax_b6ac_80w_6a_updated_balance_charger_discharge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b28d72-d1e1-4b46-bb46-c79c6fba6556/verizon_-_ellipsis_jetpack_4g_lte_prepaid_mobile_hotspot_plans.pdfIn PDF document text
    • https://ad858f6a-7bbb-416d-9365-e04d7986ed9b.filesusr.com/ugd/3c9ac1_d73df16843454081abe4a2d756ea6170.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0195a3e8-2488-4520-9f3f-b0a9ff59b60c/12979072153.pdfIn PDF document text
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_e595d4aa0b754e52b22bb20feac96cff.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6af8963-f80c-494b-9a57-22796dc752ea/pufenagoxedap.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000131ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131EA 5016 bytes
SHA-256: 1dc5837a4681eab3afdb9cc2cc0e059ff1f97d2914a56d2bc5241ee29b41a88d
font_01_sfnt_off0001430e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1430E 13620 bytes
SHA-256: 9d91e4ccebc5f75641327e42090daecf0254f5454e0723bd29a597068070d76f
font_02_sfnt_off00016f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F5E 16272 bytes
SHA-256: ab35db118eb7f53fa24b9ed2e6c815136f557d5c6bd73af489c358b6838eb9e2