Malicious PDF — malware analysis report

Static analysis result for SHA-256 222274bed4e7f4bf…

MALICIOUS

PDF

83.1 KB Created: 2021-04-02 16:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fdda1e461b1aee24fd87b534ef5ea68a SHA-1: 700f0366a46f7d9e6e508d5b1094cd3477942d3b SHA-256: 222274bed4e7f4bfd8d835df37e7881e9a043b0a980d534fc8eb6f5e20e0c03d
126 Risk Score

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 0.9993

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://jottigo.ru/wix?keyword=sober+living+san+diego+pdf PDF link annotation
    • http://vehicleinsusa.com/playstation_3_move_controller_work_on_ps4oztf1.pdfIn PDF document text
    • http://vimabanu.sportsontheweb.net/eau_guidelines_renal_cell_carcinoma_2020.pdfIn PDF document text
    • http://kalanuso.iblogger.org/rapidukegedezukotoxupe.pdfIn PDF document text
    • http://sevaxewux.22web.org/robigezemaparitavarexafo.pdfIn PDF document text
    • http://wide-take.top/34275376075iiwg4.pdfIn PDF document text
    • http://biomaniix.website/how_to_use_a_functional_trainerkv6fm.pdfIn PDF document text
    • http://guxiniz.22web.org/rasaladujovoze.pdfIn PDF document text
    • http://wulixiv.sportsontheweb.net/amsterdam_red_light_district_map.pdfIn PDF document text
    • http://erkutungotu.com/vujejapirifekatupaw8f92.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/zonebon/ditafugabebaredivirudav.pdfIn PDF document text
    • https://3b1a0cff-dc54-4917-88c1-cdf904a8db56.filesusr.com/ugd/60aab8_83c46475ee9946c08e10eff2eb3db75a.pdf?index=trueIn PDF document text
    • http://witopovuketoj.epizy.com/50682176053.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/white_rodgers_thermostat_reset_1f80-261.pdfIn PDF document text
    • http://zikituxepori.epizy.com/99987544167.pdfIn PDF document text
    • https://9334512a-4df1-45dc-8804-f0fa1d9e2a3d.filesusr.com/ugd/9466eb_6042d4d7026b40bbbbd1de134ec6e075.pdf?index=trueIn PDF document text
    • http://sokekakeloji.onlinewebshop.net/psychrometric_chart_5000_ft.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/what_are_some_story_starters.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/feasibility_study_report_of_irrigation_project.pdfIn PDF document text
    • http://vopimivukaf.epizy.com/muwaxifedogekilalot.pdfIn PDF document text
    • https://171e2b11-24ea-4535-acac-f971ec821c4b.filesusr.com/ugd/a07927_d41fe0467fbf49d18be29b01f80b5e33.pdf?index=trueIn PDF document text
    • https://e6343aec-df69-40e7-9959-3c0c55bf73c9.filesusr.com/ugd/6a9017_6c37ff26d1f24a3bba311287acff8035.pdf?index=trueIn PDF document text
    • http://vejegaba.atwebpages.com/xapavedawi.pdfIn PDF document text
    • http://fakesux.epizy.com/seleccion_artificial_definicion.pdfIn PDF document text
    • http://pekanob.rf.gd/lirr_train_times_ronkonkoma_to_penn.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_off0001018b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018B 5512 bytes
SHA-256: 47123b2f823e89e2a24c794a9df73a5cd4fb362bcf5cd36a972aea688fba3298
font_01_sfnt_off00011459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11459 12276 bytes
SHA-256: cc8a7e1ac44d3d97cd32fbe075a8a0d2ddf5f6582bb04ec149b5bffc4b942697

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