Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e00798d6025eb75…

MALICIOUS

PDF

68.8 KB Created: 2021-04-12 05:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 390e7627d54070e4b39311cc6ff10258 SHA-1: 5618ee76da986502535a5f0e674fece465425344 SHA-256: 1e00798d6025eb7572b62470a35c36f7bc3d054b2661219db4963314da5236e2
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=vocabulary+power+grade+9+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477892/normal_601f72889c792.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/bbc_radio_app_freee39gs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480589/normal_600487d7e20b0.pdfIn PDF document text
    • http://winwites.space/how_to_service_a_onan_5500_generatorbpjsj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494866/normal_60323324c63f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366371/normal_5ff8adc1dc4ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479678/normal_5ff95f93aa454.pdfIn PDF document text
    • http://shopwithsale.website/sekojiviginipulupolubij16yxt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2b08c346-38d8-4763-b559-bb9d4fff2313.filesusr.com/ugd/40c9d6_ad6af078a7c94d62ae6202956e73603f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dedd5c7-6314-4e3e-912b-c24aa5ee63b3/how_to_transfer_contacts_from_htc_to_lg_phone.pdfIn PDF document text
    • https://6e3eaeb2-b9dd-4462-8b56-96c59beebd9a.filesusr.com/ugd/dcc11b_ced7683c9f554ddd8aec2e84732ba1b1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/74acb13f-9730-4830-b067-d6d93cdefc33/10941704201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73ffc486-fa89-4a74-bfe4-836b0ef7fd63/catia_v5-6r2014_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c07d80-95b7-418b-9ddd-07048e381ed0/diario_de_un_viaje_en_motocicleta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a640309-3ff4-470a-bb5b-f67edd91231c/61991404888.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc379e8-dbaa-4146-b599-5682717a939e/91661242291.pdfIn PDF document text
    • https://2e21b658-2967-4279-8f18-a03590b678a5.filesusr.com/ugd/f5e1b2_e8a1812bc5364f8cb9257e818f92a6b9.pdf?index=trueIn PDF document text
    • https://c1cb471f-fc5c-4ef2-b3e1-4d0d0d09d135.filesusr.com/ugd/cc5b41_844395f1f101427ea598a06a08b1330e.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA6 5600 bytes
SHA-256: f8d0bd390706e82d83ecd8d8049d22c3c8df613f96bdc2bbc7456aef815e05aa
font_01_sfnt_off0000e2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DA 9756 bytes
SHA-256: 74cc0a26cd43529c0b26007a3e38f876e6979ac93fd0403d8de6cb5d991c262c

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