Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f6a45122b0bf84…

MALICIOUS

PDF

82.1 KB Created: 2021-04-25 03:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7e13cdcd92085113d32d48764ed21a49 SHA-1: c0df7c203e76c3ae220c77c682a0f7ab864a6f83 SHA-256: f5f6a45122b0bf8406bddcb55386fc727cdd463ef619638108fb3e0435ad3b4a
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 0.9990

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://gimoguvi.ru/strik?utm_term=individual+development+plan+for+managers+template PDF link annotation
    • http://benivosefemiza.medianewsonline.com/ordinal_scale_of_measurement.pdfIn PDF document text
    • http://workmonster.net/spreadsheet_software_namemurem.pdfIn PDF document text
    • http://bositozibab.getenjoyment.net/bh_live_classes.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/tabel_asmaul_husna_dan_artinya.pdfIn PDF document text
    • http://instapresent.site/d365_management_reporter_exportes86m.pdfIn PDF document text
    • http://toppiksnack.xyz/lefajolevukilutanetutoww1n26.pdfIn PDF document text
    • https://sizomejuxitiz.weebly.com/uploads/1/3/4/7/134748976/xisugazujufonu.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/86135947063.pdfIn PDF document text
    • http://posurazatux.mypressonline.com/free_online_editor_with_ocr.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/rurenomokukavaxokel.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/menaju.pdfIn PDF document text
    • http://bonus332.site/97575374207a631v.pdfIn PDF document text
    • http://wirelessinfo.ru/tupokegavusgiz98.pdfIn PDF document text
    • http://rexuwoxaga.sportsontheweb.net/yoga_poses_for_back_pain.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/tedemadejubivur.pdfIn PDF document text
    • https://vibisorimujeke.weebly.com/uploads/1/3/4/3/134344086/45ac9.pdfIn PDF document text
    • http://newberginvestmentproperty.com/slither_io_zoomujjdg.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/17216075579.pdfIn PDF document text
    • http://freefire-gifts.com/can_you_make_calls_on_fossil_gen_5tdg62.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/kalumijokomari.pdfIn PDF document text
    • http://feelslike35.com/8902585878843ec0.pdfIn PDF document text
    • https://vokarojunez.weebly.com/uploads/1/3/2/6/132696330/9a04f27a9.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/rsum_atomistique_smpc_s1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vidugozu.atwebpages.com/human_biology_free_download.pdfIn PDF document text
    • http://natukifuza.atwebpages.com/2806891978.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF593 5240 bytes
SHA-256: 2c8b03bff431520ddb60a7ca71ebf0df872c0a5ba855c36e78ac290d2399ce13
font_01_sfnt_off00010754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10754 10704 bytes
SHA-256: b106c1a6ca4de2053e900d4410dc7a361f85035951d57e8446cb40297b454bdf
font_02_sfnt_off00012bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BDE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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