Malicious PDF — malware analysis report

Static analysis result for SHA-256 b40011e49961f244…

MALICIOUS

PDF

79.8 KB Created: 2021-03-25 16:21:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aa978e295f8c0e026eb8440fa6a6a81b SHA-1: 9e208c7e6c9e0bea6d45a7723acc3ad998b2d9f6 SHA-256: b40011e49961f244a74d514306cc3a5d89ca0caf36596d4072aed561441c541f
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-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://seumenha.ru/strik?utm_term=how+to+run+a+marathon+with+little+training PDF link annotation
    • https://jofukesor.weebly.com/uploads/1/3/3/9/133999831/ruket.pdfIn PDF document text
    • http://naxenavuk.22web.org/attestation_d_hbergement_pour_visa.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/kazufovur.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/jjagghe/mastercraft_tires_rebate_2020.pdfIn PDF document text
    • http://momarivido.mypressonline.com/tavupalul.pdfIn PDF document text
    • http://supesanav.iblogger.org/how_to_apply_vinyl_sticker_to_wine_glass.pdfIn PDF document text
    • https://cdn.sqhk.co/tusufawenu/jZiiig5/level_maker_jurupa_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wazilisiko/gle3heq/bmx_freestyle_extreme_3d_unblocked.pdfIn PDF document text
    • http://ligexekena.mywebcommunity.org/is_the_power_of_positive_thinking_real.pdfIn PDF document text
    • http://palifagumelu.22web.org/simple_past_exercises_for_beginners.pdfIn PDF document text
    • https://puzejiwitamino.weebly.com/uploads/1/3/1/4/131453698/3da6f.pdfIn PDF document text
    • http://benivosefemiza.medianewsonline.com/bible_niv_download_free.pdfIn PDF document text
    • http://gifozizonumili.iblogger.org/41721473071.pdfIn PDF document text
    • https://jezonekapinojel.weebly.com/uploads/1/3/4/6/134619201/kofowi.pdfIn PDF document text
    • http://buvevevonukaxe.iblogger.org/lepogubif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/517f111a-733b-4498-9fef-64a5972cbbbc/what_is_shooting_an_elephant_about.pdfIn PDF document text
    • http://migusopugaj.epizy.com/baskerville_font_ttf.pdfIn PDF document text
    • http://dapufojutujat.atwebpages.com/85931643471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae772f7e-a576-4c62-af84-a0888abc928f/tivas.pdfIn PDF document text
    • http://xuvunemomot.epizy.com/ielts_reading_practice_test_32_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ae80480-3e46-4724-b409-522f97d71872/how_to_create_creative_visualization.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_off0000faf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF9 4972 bytes
SHA-256: 20dcb79b7da293149e846da81f83bd0c93e1cb2c9a77933bdbf3d5217964bf0a
font_01_sfnt_off00010bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC8 11132 bytes
SHA-256: 63abf508106b1c89d4804649364096f52a956db4a60c265c2361c2d1ed131990

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