Malicious PDF — malware analysis report

Static analysis result for SHA-256 068827b8b3d482c1…

MALICIOUS

PDF

70.3 KB Created: 2021-06-03 23:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9b3c939a3fb9b189c6fba983341791fb SHA-1: 45f816c7e52bed1a2e60c1d5364034f7f5a68e5a SHA-256: 068827b8b3d482c10d2285f84b362f867297ec318e51dcadf73c661358048e32
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous embedded URLs, many pointing to disposable hosting or link farms, strongly suggests a phishing or malware distribution attempt. The ML classifier also returned a high confidence score for maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ketchas.ru/pbw?utm_term=truma+trumatic+s+3002+p+manual PDF link annotation
    • https://kuvuwivozud.weebly.com/uploads/1/3/6/0/136091804/zigemunazexi_vakimoto_dopabesoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405185/normal_60226cfb1151c.pdfIn PDF document text
    • https://jefiwosu.weebly.com/uploads/1/3/1/3/131379536/demiwane.pdfIn PDF document text
    • https://romadixisom.weebly.com/uploads/1/3/2/6/132681692/potulojezapi-fugor-jatepemu-naserugajux.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4390374/normal_60b1c9de2631a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_5fe66685048e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5fe7780b2f796.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4381528/normal_60b2d42844da1.pdfIn PDF document text
    • https://xezelugewopisaw.weebly.com/uploads/1/3/5/3/135311865/fitetelewu-talagupizi.pdfIn PDF document text
    • https://dopapebo.weebly.com/uploads/1/3/4/8/134870178/cfd2b8d5e0e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jobojifitin.pbworks.com/f/63781475980.pdfIn PDF document text
    • http://rimikupababo.pbworks.com/f/how_to_download_songs_on_spotify_desktop.pdfIn PDF document text
    • http://midevodimu.pbworks.com/w/file/fetch/144450210/free_fire_diamond_hack_mod_apk_v1.47.0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5161103-61a3-4387-9589-d0ebf876bf38/sony_dsc_rx100m4_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e11cba2e-1350-4c77-9e5d-31cfd22281de/what_kind_of_watch_does_rafael_nadal_wear.pdfIn PDF document text
    • http://genarozep.pbworks.com/f/jilunixare.pdfIn PDF document text
    • http://lomubel.pbworks.com/f/92651320853.pdfIn PDF document text
    • http://dipoziw.pbworks.com/f/fowifomamukojogupimifafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c725c0-f9e3-40ed-b78e-dde778feacbf/is_the_fall_of_reach_canon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0a2e177-8659-48ea-b6ff-86325961fe52/gmat_books_2021_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/576ac36e-1d4d-4851-8a97-73c71f4ef5cd/flowchart_creation_software_free_download.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_off0000d64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64C 5468 bytes
SHA-256: fc8769d4d71d124eb80b3ad46ab357425f8bf7c0852d71540020c5da37aceca0
font_01_sfnt_off0000e8c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C1 10332 bytes
SHA-256: 99c0e1e4c1230ae02bcb6052db6f220ee16ba859c5de30451b5e56c80150efce

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