Malicious PDF — malware analysis report

Static analysis result for SHA-256 f25afc906f9ce8eb…

MALICIOUS

PDF

75.0 KB Created: 2021-04-18 20:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cbc7da98359230ec94a595cec43d29d6 SHA-1: 754e8679e72a1225a3f615f4333e7286b5585db9 SHA-256: f25afc906f9ce8eb7842e9b6073845ff19e1f0342f6a32da01e2a12c5115c48b
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 0.9996

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://mezovuduw.ru/strik?utm_term=what+is+the+meaning+of+howlite+stone PDF link annotation
    • https://xotogifove.weebly.com/uploads/1/3/1/4/131406695/76c6be52899b9cb.pdfIn PDF document text
    • https://pewatusikowago.weebly.com/uploads/1/3/2/6/132683224/4388865.pdfIn PDF document text
    • http://datingsexchat.site/sinajinulekomebinanbu7w.pdfIn PDF document text
    • http://kamini33.ru/134390973302n9b4.pdfIn PDF document text
    • http://znalomstvavip.site/14830229195rfa0j.pdfIn PDF document text
    • http://vittorguxx.site/porter_cable_air_compressor_150_psi_6_gal_partsxrkc9.pdfIn PDF document text
    • http://izzzaaa.space/retikadetebotli7i.pdfIn PDF document text
    • http://apparentlyopt.com/timumepivirodivap4c2c.pdfIn PDF document text
    • https://zipuwuxa.weebly.com/uploads/1/3/4/3/134376087/pemagevidikakoxikenu.pdfIn PDF document text
    • http://tihefers.online/my_talking_angela_free_mobile_gamessxajt.pdfIn PDF document text
    • https://zevutegelaxi.weebly.com/uploads/1/3/4/6/134687356/nudunariv_derev_rinod.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/1249b11b-5094-4fde-adf5-1da4eb888230/dbt_skills_training_online.pdfIn PDF document text
    • https://e46eb8ae-11b5-47af-91b5-79e2db369635.filesusr.com/ugd/f84671_96ff534921934ba89df1b642daef1be7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/22349103496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c483d666-8e28-4204-af4c-e440bf7c59aa/lororiwojif.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/livaropokitidem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f93ff90-12ae-4071-80bd-a7fb0b86775d/46520053948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54c378a2-7ea0-4c0c-b8e8-e60d0a9e4cf8/92642905887.pdfIn PDF document text
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_73798596b9c948b5923e89f0db1e057c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/antivirus_eset_nod32_free__crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cca3b783-8044-420b-81bf-963af5eb0473/dabuxoduxezisex.pdfIn PDF document text
    • https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_b618d675306247d6aace79ecb77c4fa4.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_off0000e8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B6 5192 bytes
SHA-256: 007191f707fc5705e8c19de172291a089a18366f57395e3f5fa1d40549e63ad0
font_01_sfnt_off0000fa59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA59 10712 bytes
SHA-256: 7d0b6572939eaec2ca5d5408bb11ebc427a476fc2ba304a6e7d8f29720b1cc0c

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