Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd02b22c19e94577…

MALICIOUS

PDF

68.7 KB Created: 2021-03-17 20:41:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4a08b68a8811aa4cd83e74ba1c2b6fba SHA-1: 90792a560fb2676a0d9e910a8b20a989d132409f SHA-256: dd02b22c19e94577d9932107e696ff2bd4d6d0919b698967f4f7cd6bdc6e2ac6
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 0.9992

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://zajinet.ru/wix?keyword=wolf+dnd+mini PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501037/normal_60391ed1cf77a.pdfIn PDF document text
    • https://pepulerizalumel.weebly.com/uploads/1/3/2/7/132740212/2674bd560f1c64c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389352/normal_60397ae8c1570.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386593/normal_5fef639bdde88.pdfIn PDF document text
    • http://jorolog.22web.org/xodusuguximogop.pdfIn PDF document text
    • http://kafalukuwemi.mygamesonline.org/kogupevofa.pdfIn PDF document text
    • https://jiwonilasipa.weebly.com/uploads/1/3/4/3/134313366/jixisus-gomomo-folifupasu-lajasevazoladux.pdfIn PDF document text
    • https://soranetibipuve.weebly.com/uploads/1/3/0/7/130738631/munevizolegu.pdfIn PDF document text
    • http://soluzixod.66ghz.com/parigopirarisokotipij.pdfIn PDF document text
    • https://raziliselew.weebly.com/uploads/1/3/2/6/132695443/0a9da2cad4b.pdfIn PDF document text
    • http://sekelenogake.getenjoyment.net/union_budget_highlights_2020.pdfIn PDF document text
    • http://zukasegepeni.22web.org/lefusikumunerozixiluve.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/garmin_astro_220_map_card.pdfIn PDF document text
    • https://talipugetajizan.weebly.com/uploads/1/3/4/8/134862074/49f484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490920/normal_604cd23e38684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pabixezo.rf.gd/can_you_use_google_play_on_amazon_fire_tablet.pdfIn PDF document text
    • http://natikajurijufuk.rf.gd/search_google_account_login.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/54211342780.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/cherokee_language_app_for_android.pdfIn PDF document text
    • http://mavavopem.rf.gd/how_to_use_resistance_bands_on_arms.pdfIn PDF document text
    • http://guwupurog.epizy.com/how_do_spaceships_overcome_gravity.pdfIn PDF document text
    • http://fanofajuduma.rf.gd/lowima.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/car_games_2018.pdfIn PDF document text
    • http://xifeloj.onlinewebshop.net/literary_analysis_essay_graphic_organizer.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD01E 4584 bytes
SHA-256: 1e70904dcc84540defcb6c9bef8f44dd38044985fed81400eb730455b00430ef
font_01_sfnt_off0000dfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB6 11228 bytes
SHA-256: 4bc6f98720f0e3d1d0808e51e89bd84880f61c2678857d97d19bc26474662886

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