Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0550f87207ea66…

MALICIOUS

PDF

69.5 KB Created: 2021-03-14 12:11:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e9c7235f224cf097639569e696adecf4 SHA-1: b8d8054473063d4c0f4f69cfcddb7e54ac2a7832 SHA-256: 9b0550f87207ea665eab85a283c444b4fd12b296210562f90a349ce8b888a93f
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 0.9998

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://soxebez.ru/wix?keyword=fetty+wap+album+2019+download+zip+file PDF link annotation
    • http://tertov.xyz/which_book_is_best_for_gate_civil_engineeringnge0s.pdfIn PDF document text
    • http://1pokypki.website/biseptol_prospect2omyj.pdfIn PDF document text
    • https://nijasofefovo.weebly.com/uploads/1/3/4/7/134719995/3471341.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/bagolezefafuro.pdfIn PDF document text
    • http://ecoservice-vlad.ru/fenoraladisapitefobodpzw4.pdfIn PDF document text
    • http://pokemonrivals.online/razejq5trh.pdfIn PDF document text
    • http://psychologyrelax.xyz/hcci_stock_reportp5efn.pdfIn PDF document text
    • http://inostrana.com/vuruzodibonawukulajabapurn440.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/gepenhe0sl.pdfIn PDF document text
    • http://openplafond.xyz/how_to_put_watermark_on_pictures_in_word46luy.pdfIn PDF document text
    • https://temadugebunexi.weebly.com/uploads/1/3/1/8/131871621/nemukokizoluvexokoxe.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/4c5a2bbf-b77c-4a04-a486-749774c061c4/what_are_the_key_elements_of_writing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2047dce2-b022-4af5-9651-6b97c87213f2/how_to_start_homelite_2600_psi_pressure_washer.pdfIn PDF document text
    • http://bujekotu.atwebpages.com/mapa_mundi_blanco_y_negro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ced2b03d-8715-4944-a431-40d9ec07900c/simplifying_square_roots_worksheet_answers_with_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184a7631-2eb1-41de-bfa9-77576c2fb3df/memukafix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1336b9e3-8cde-4612-b548-fdbc23ffb905/how_to_troubleshoot_amana_washing_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88d5f5d-868d-46a9-a9c5-55ac76d093c7/fusifuz.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_off0000ceca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECA 5736 bytes
SHA-256: 5fdb3bbb52d67a04d88f27c57b939cfa9418f7a05048a39dc485f4b3d4804ccd
font_01_sfnt_off0000e265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE265 10752 bytes
SHA-256: 3da00f7cf06f380815fec67c0b151e887a033072c5b9f3e001428c3384deda0f

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