Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0e9ab5825ff1d7…

MALICIOUS

PDF

82.3 KB Created: 2021-03-28 16:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a0c40a88fd8e8b37044bbcd2687486e8 SHA-1: c52cfc7cdb370983b4b0b6a0993a9bea83737a56 SHA-256: 0f0e9ab5825ff1d774b53480c709e9a48793ad82075490af7520a5cb67ba207d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9994

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/award?keyword=the+bigger+leaner+stronger+training+program+pdf PDF link annotation
    • https://cdn.sqhk.co/zapiseniw/aheB1jd/lulivupaxupepoguwaji.pdfIn PDF document text
    • https://cdn.sqhk.co/delinilipo/jfMcXDy/bisivirukebakenagoxom.pdfIn PDF document text
    • https://cdn.sqhk.co/bobimugura/WRhajfM/car_payment_plan_template.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/zo6lhjf/bugsy_and_meyers_flamingo_las_vegas.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/QjcLM7A/msx_emulator_android_apk_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/liripudeb/jhpXic0/indoor_things_to_do_near_me_tonight_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/biaiije/ark_survival_evolved_pc_server_hosting.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/YgcAhhT/38897198377.pdfIn PDF document text
    • https://cdn.sqhk.co/tesolivu/ieGmicL/withings_health_mate.pdfIn PDF document text
    • https://cdn.sqhk.co/juzilolawu/hbDihjh/baby_naming_ceremony_invitation_template_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/jcWhegj/warrior_cat_game_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/zibomevuguli/8WCjdgh/fivupori.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/hhpO2GX/zomafowefolibida.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://835a0401-7144-467e-aacc-710587930ffc.filesusr.com/ugd/432cba_b13955cfc0034cf58871c3f51b8a1cbf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/app_store_showing_pending.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/58506248425.pdfIn PDF document text
    • https://05e27880-d5e1-4d3d-8428-ba943e9300bc.filesusr.com/ugd/b56239_f507a6bf2f5e4f889798aa2f3d4c5a22.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fikuvine/rexowisiliwedejiwosubu.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/legal_definition_of_environmental_impact_report.pdfIn PDF document text
    • https://314a97e4-cc7b-499c-a999-42b15fb65c39.filesusr.com/ugd/fa4a73_62f18aae4a65486082ecb14c64beb610.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/gozotajuj.pdfIn PDF document text
    • https://73856814-13bb-4d44-aeaf-752cce6ba6bd.filesusr.com/ugd/a0d21a_f7a3c05ff38d48619c8f73c67debfec9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wovigebi/citing_sources_in_apa_format_in_text.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

Related samples 2

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_off0001004d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1004D 5544 bytes
SHA-256: e7cb7faf392ea3a606a1c4f4ff8bbf089b4341baa98be131b817698f295ab177
font_01_sfnt_off000112f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112F7 11228 bytes
SHA-256: f0b37da51770d808886067c18dfbc3603aaecd9567888e49aecfb6d7239ae4ae

Open this report in the interactive analyzer, or submit your own file for analysis.