Malicious PDF — malware analysis report

Static analysis result for SHA-256 85eeb68d4983066c…

MALICIOUS

PDF

93.0 KB Created: 2021-03-05 16:49:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 76e3f31b6e83b1f53a7a8d8b8e8252e9 SHA-1: 92f4e171b1df9306af5f235cfddfc2f53bff0e02 SHA-256: 85eeb68d4983066c1c80e5a5cd23823827c6d28e4edb4413fe36746f7862808f
186 Risk Score

Malware Insights

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

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 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://leonvi.ru/aws?utm_term=which+warlock+pact+is+best PDF link annotation
    • https://cdn.sqhk.co/lebogomatoze/eQ5Iwje/biworawaxanepeluwijela.pdfIn PDF document text
    • https://nepexinis.weebly.com/uploads/1/3/1/4/131438592/saxufeve.pdfIn PDF document text
    • https://rodinesupogoj.weebly.com/uploads/1/3/1/3/131384539/f9881a9b9a.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/Hxibswb/luremuduzarufolosupi.pdfIn PDF document text
    • https://cdn.sqhk.co/juvebuzizej/0NieiDM/1731753855.pdfIn PDF document text
    • https://lagonola.weebly.com/uploads/1/3/4/8/134851586/e5c36bfe74dd6a.pdfIn PDF document text
    • https://juxusuvib.weebly.com/uploads/1/3/0/7/130739690/fojisale-gerunatan.pdfIn PDF document text
    • https://rodefakuwutepez.weebly.com/uploads/1/3/4/3/134341390/b1a0697.pdfIn PDF document text
    • https://cdn.sqhk.co/mitajaso/ahajfSx/barber_shop_simulator_3d_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/eJmhnob/banana_kong_blast_apk.pdfIn PDF document text
    • https://fadufavibog.weebly.com/uploads/1/3/4/8/134889314/c054864a.pdfIn PDF document text
    • https://jewakazakiven.weebly.com/uploads/1/3/1/4/131437085/vefij.pdfIn PDF document text
    • https://misekijenag.weebly.com/uploads/1/3/1/3/131380320/6150587.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4fb1164-9ecb-4aff-b8e0-72ecb19c253a/5410857580.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/zukasutudizuwiganax.pdfIn PDF document text
    • https://70010cfe-69b1-4fe9-a336-bdfe2418dc1e.filesusr.com/ugd/f1d680_3831bdbf436e4865a549988ae7f59eb0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/717c6971-c06d-4765-a4cd-e652e072ce50/mijigevofabibanubogejax.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/rajaperozuzalediro.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/antivirus_avast_gratis_para_celular_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/java_recursion_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09b5ec62-7a0e-4b7e-9a4b-1ad1645522ea/xutagewaf.pdfIn PDF document text
    • https://fccd5518-64e1-462d-9dbe-8d8d8a19ca7a.filesusr.com/ugd/eb005d_de66d6ecc98644bbaec01a3c68a6dbf5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/300ba458-d3bf-4c3b-85f2-90057fed7377/giwelesenotulufumapido.pdfIn PDF document text
    • https://e8f98835-b194-42a5-b43f-fe2f29920dd6.filesusr.com/ugd/bf650e_29bae247adf443508c4ae0fcf362738e.pdf?index=trueIn PDF document text
    • https://91313464-3f42-441e-b0e8-b27065d471ad.filesusr.com/ugd/ee9d3f_73b87e8cb8694734aa122ddf375d7214.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mizeteb/distributive_property_algebra_worksheet.pdfIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_5795fd6beee749289fe382f636604f0b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/45418162-f21d-4fbb-ae1e-6daff00f1a10/qu_tipo_de_sistema_de_informacin_gerencial_debera_tener_la_organizacin.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_off00012e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E77 5332 bytes
SHA-256: 896f9f48e7858874ec48566c62b311dc92afad4d39be595ca26e74e5a2936e27
font_01_sfnt_off000140aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140AA 11232 bytes
SHA-256: 93200c96975c544669c40de62c4435cabec6334fbac86536137b82a02444709e