Malicious PDF — malware analysis report

Static analysis result for SHA-256 600da578df293568…

MALICIOUS

PDF

81.9 KB Created: 2021-03-24 01:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 11acc8286fb31a67edbedd9349f4f437 SHA-1: 9587e707608d1ed01cb99113d1e2d534e43d0137 SHA-256: 600da578df2935681918a78aff107697c186bdcb5707108f8ed088867c9e90fc
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 0.9964

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://xezojetit.ru/strik?utm_term=how+to+connect+rca+mp3+player+to+computer PDF link annotation
    • http://saporik.scienceontheweb.net/fefumaxazixuwazafazitad.pdfIn PDF document text
    • http://tigafik.mygamesonline.org/towiwurazubisejimaga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410727/normal_5fe59a7984200.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491173/normal_5fd8480820995.pdfIn PDF document text
    • http://mixojixirofaj.iblogger.org/flywheel_energy_storage_system.pdfIn PDF document text
    • http://wikotimu.scienceontheweb.net/bharat_gas_new_connection_form_download.pdfIn PDF document text
    • http://kebotup.66ghz.com/18513436795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471711/normal_603e8664e2144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_603a71f8e6333.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444630/normal_6005d46708c91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_602243c6c8bb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424364/normal_5fef9c3a79978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466173/normal_601937c7e0163.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408875/normal_5ff275f898486.pdfIn PDF document text
    • http://zedateve.mypressonline.com/beats_by_dr_dre_studio_1_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_3ba247b7377644c7809bd1cba6b382f7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/resisuna/xefodamatuxopudij.pdfIn PDF document text
    • https://91506351-5699-48ce-85e7-8e7d071f4e87.filesusr.com/ugd/d775a9_0ef0ed6d73cc4fcfa01466d262992904.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/ala_baburao_song_320kbps.pdfIn PDF document text
    • http://gowefemum.epizy.com/15708555515.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/bihar_board_online_application_form_2019.pdfIn PDF document text
    • https://3857ddc0-2b33-46ba-b4a8-ebef9b167687.filesusr.com/ugd/5cc0d5_afa4bbd1ddfb4134a795d5a0bde99999.pdf?index=trueIn PDF document text
    • https://43cb2d18-1589-43a7-b1c5-fe1278e1c76d.filesusr.com/ugd/370b54_c21adc2e5507446c8b399f2dd702b6f9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tobaziw/kubalixi.pdfIn PDF document text
    • http://jupevesu.atwebpages.com/the_ancient_secret_of_the_flower_of_life_book.pdfIn PDF document text
    • https://s3.amazonaws.com/gatazeromij/23310389541.pdfIn PDF document text
    • https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_69afa3c4930340fab5998e2e5c53372e.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_off0001014e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1014E 5220 bytes
SHA-256: d51319a8567ac6b111b10f129496ef4a6606ea2e5f4611b59acfdcafb55f65bc
font_01_sfnt_off00011314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11314 11296 bytes
SHA-256: c5926edf33b9c19aa2c27bbac37ee9b29d0f0d95961103c22554665309b50749