Malicious PDF — malware analysis report

Static analysis result for SHA-256 026f8f198ad2b748…

MALICIOUS

PDF

65.9 KB Created: 2021-02-12 13:58:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 11825a75178757b4156bddc18411a339 SHA-1: 00b14d8e701ea16835f45271c497cea3487f69a6 SHA-256: 026f8f198ad2b7484fccb78909bae7166023d9cad96ec9ed11eea36c62efdc9e
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 0.9997

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://maypoin.ru/wix?keyword=how+to+train+your+dragon+2+online+dublat+in+romana+hd PDF link annotation
    • http://otshelnik.net/hierarchy_chart_template_freegbmu0.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/idQiiKr/lobbyist_economic_definition.pdfIn PDF document text
    • http://lastmarkt.ru/937463786377gfmh.pdfIn PDF document text
    • https://cdn.sqhk.co/buganisazobu/fhjPNsO/9599442642.pdfIn PDF document text
    • http://opensol.xyz/rotovawutenubunupakodiguxjbfj.pdfIn PDF document text
    • https://cdn.sqhk.co/rosavuzezig/ihhhhkh/foosball_hockey_pool_table.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_5ff8f2c1d8a53.pdfIn PDF document text
    • https://cdn.sqhk.co/mefomixut/ghd95if/jefikizogokolupamabeg.pdfIn PDF document text
    • http://fitit.space/agent_orange_strain_yieldwjtj7.pdfIn PDF document text
    • http://natur-green.fun/duvaxutuvadurizowevimi43bud.pdfIn PDF document text
    • https://cdn.sqhk.co/degavorofala/ZShbzoX/wijubijagemufunidemasefu.pdfIn PDF document text
    • http://euroshopme.site/attestation_pole_emploi_vierge_remplissable_20185ih5o.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gedimuta/nice_guidelines_copd_july_2019.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE5A 1556 bytes
SHA-256: 2e4e33d12858770341d47d0624c55b913b6ac04b970effe7f449704053a42561
font_01_sfnt_off0000c642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC642 5488 bytes
SHA-256: d803cd9adc70197ef5e1718f1e58f913ede1388ed7e9bd61211aeaac14737f73
font_02_sfnt_off0000d8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D9 9752 bytes
SHA-256: 54322f2d712763f1cf45679e74fdf18bc1f4db09733b1d8a0cdca3cac32f06ba

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