Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe50c07abc44de8…

MALICIOUS

PDF

73.1 KB Created: 2021-04-01 19:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f768be8a89475d4814359be8b539e2f3 SHA-1: d127dcea87aa6b7c1fe62ce9fda094d4e6db0bd8 SHA-256: afe50c07abc44de868b0194a6d4b94544b52392c87c9c10ae67dc1dd513f24fe
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 0.9991

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/wix?keyword=logan+streaming+australia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475715/normal_6021450e90f11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497093/normal_604a63f1e5908.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/narasimha_karumanchi_java.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/fMjg4xF/vakibuboru.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/jghhdha/combined_events_definition_math.pdfIn PDF document text
    • http://sevibifodome.getenjoyment.net/biodiversit_algerie.pdfIn PDF document text
    • http://zevupixikug.mywebcommunity.org/91340349468.pdfIn PDF document text
    • http://vepenuvix.mygamesonline.org/44363563081.pdfIn PDF document text
    • https://cdn.sqhk.co/miwiwefe/HwiiheA/81541235595.pdfIn PDF document text
    • https://cdn.sqhk.co/bafaluminowi/qhijggh/lumuwuw.pdfIn PDF document text
    • https://cdn.sqhk.co/vofonowul/jIgiaOq/99407205948.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/mPFWFjd/magic_earth_navigation_maps_test.pdfIn PDF document text
    • http://kopalirigel.mypressonline.com/molecular_biology_jobs_houston.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_600e05c1a9d42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5fd1ab86ad6fd.pdfIn PDF document text
    • http://mitatizizuje.mypressonline.com/texas_instruments_83_vs_84.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/kegubinefuda/gijadonajulavo.pdfIn PDF document text
    • http://naxesabefadufu.atwebpages.com/roxevebilulaganawiji.pdfIn PDF document text
    • http://zujisofivo.onlinewebshop.net/34593151384.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/mcafee_antivirus_free_with_activation_key.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/is_most_capitalized_in_a_title.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/99819179531.pdfIn PDF document text
    • http://pebomotixot.myartsonline.com/art_of_living_bhajans_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/cricket_game_app_for_android_mobile.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 8

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_off0000e115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE115 4948 bytes
SHA-256: 747a81fe646930abaa2c2d534a3a1b9e9a1fbe08073b1ed716742ab6f8b4dbe6
font_01_sfnt_off0000f1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D8 10936 bytes
SHA-256: b8e65f55fbacf7558a0b0c055d7a82e7fa18c8f7837800ac81181f3ad6df24e3

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