Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe675fd70a86b82…

MALICIOUS

PDF

75.4 KB Created: 2021-03-26 11:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 32334042c51af7529547ba500ae81764 SHA-1: e60a35888a39ad59f574841eae65a4af8aa7d257 SHA-256: bbe675fd70a86b82250b03ee0e0c2ee154f214ef3896ecdaaf3e5bdc89e21759
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://pelibifir.ru/wix?keyword=environmental+science+notes+outline+unit+9+answers PDF link annotation
    • https://cdn.sqhk.co/wexunaveb/OjgxhdC/lirubosixave.pdfIn PDF document text
    • http://vuzitofakomuj.22web.org/nudojaja.pdfIn PDF document text
    • http://purigoguwoz.22web.org/parquet_format_vs_orc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387033/normal_604b6a4cedc39.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzefoke/ieXBIih/medieval_wars_of_holy_land_epic.pdfIn PDF document text
    • http://dupigetibulira.iblogger.org/47547050691.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388285/normal_605b1c4902431.pdfIn PDF document text
    • http://kixogabes.22web.org/mobibusapopu.pdfIn PDF document text
    • http://nalutomabesuso.iblogger.org/spoken_english_file_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/autotune_for_cubase_5.pdfIn PDF document text
    • https://a97cc435-ef8e-4ffb-8544-4b9c0bda5a6e.filesusr.com/ugd/7ab440_b05079ba55eb4545ac8927fa4c776d55.pdf?index=trueIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_6a1f836a0c8e4d47b82160ef535113b5.pdf?index=trueIn PDF document text
    • https://37dcb74a-b492-4e6c-94d7-6984b04a3d7f.filesusr.com/ugd/01eaca_69f1b87c13f6490ba664c843e4cf1d33.pdf?index=trueIn PDF document text
    • http://rarukerar.epizy.com/9330099743.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/gukidetaxise.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/how_to_custom_sort_in_excel_pivot_table.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB22 5208 bytes
SHA-256: 4d91a5d7bab93acf8be4d211e56e2046ddc29e8e4698764bb5618a63d1d134b6
font_01_sfnt_off0000dcc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC8 2200 bytes
SHA-256: 4030c7aefbbed39d7919d2395fd7b11ab61cda3bb380a7931589370404e66398
font_02_sfnt_off0000e6d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D8 10376 bytes
SHA-256: 05c58591cf6966d50ff02bc4a86b4f2a1ca14b90d912c54abc92495d54bf06a2
font_03_sfnt_off00010a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A98 16116 bytes
SHA-256: f8e326b96df6c0457890c6346fd7f60b91beb129051a642dbd03fdf119a21fd7

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