Malicious PDF — malware analysis report

Static analysis result for SHA-256 50bbbed032d80334…

MALICIOUS

PDF

109.6 KB Created: 2021-04-20 19:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4e4f5f54f1235612c46bd7c8ffc8dac1 SHA-1: dbd12bdafbdc045892a6d0728dc3b1a9cc417275 SHA-256: 50bbbed032d803346b52aa90b4d792e49d08e389369e3dd0db80798cc922e780
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 0.9965

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://fokemale.ru/strik?utm_term=hp+scanjet+5590+adf+flatbed+scanner+price+in+pakistan PDF link annotation
    • http://sozapemogoz.mygamesonline.org/wozig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478383/normal_6054cbb640bdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374852/normal_5fd664f6bb8ad.pdfIn PDF document text
    • http://kevakigev.medianewsonline.com/pdf_autoconverter_intra_mart.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408475/normal_5fd6849d39716.pdfIn PDF document text
    • http://dazolovegom.mygamesonline.org/8441138284.pdfIn PDF document text
    • http://zoxodur.sportsontheweb.net/furamogamokigeba.pdfIn PDF document text
    • https://kafijojiwagovi.weebly.com/uploads/1/3/5/3/135387916/jukusuwuwum-golix-semasiturezu.pdfIn PDF document text
    • https://bisigibibozika.weebly.com/uploads/1/3/4/4/134438783/2391d68cc8f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494139/normal_60082d04b7596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452587/normal_6053148d9cfa5.pdfIn PDF document text
    • https://dokurawufiza.weebly.com/uploads/1/3/0/7/130739275/fca58e009.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/60420804098.pdfIn PDF document text
    • http://tojuvapemupo.mywebcommunity.org/basic_korean_for_dummies.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bagugexasorip.myartsonline.com/67351750115.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/la_la_land_theme_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/10441534353.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/kitaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de9a593-6225-474e-9983-afc0f97500a3/96651644606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06026db5-c34b-475c-9262-6e8c6fa886c4/black_and_decker_18_volt_lithium_battery_charger.pdfIn PDF document text
    • http://purewowesajumu.myartsonline.com/musufirat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67fb9867-d16c-452d-a4fc-211f4aeb8725/lincoln_210_mp_tig_welding_aluminum.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/43364609461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/872c6487-9996-433d-b585-daf634e6c02a/how_to_reinforce_sagging_floor_joists.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/front_end_design_templates_free.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12913 8760 bytes
SHA-256: 7f94d3d2189508acd3ecf3f4b924293c9d596763635e89d1c2bcac9ac73e3a6b
font_01_sfnt_off00014550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14550 5812 bytes
SHA-256: ed8c321dbab57ef7eb24aa0eeb8839ae9fa7fa0b3240e18ed24433ea9de89c43
font_02_sfnt_off00015924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15924 3852 bytes
SHA-256: 71c98f1f0ae2ef9333828ee85ea83c9551a83b06002846ea3a22cec639e85686
font_03_sfnt_off00016523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16523 13204 bytes
SHA-256: e98306995511febb87a1efee9f6476b9ecc7a1f5578d9f30ca5d7328d5732bb7
font_04_sfnt_off000191e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191E7 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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