Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcb7473080efb26e…

MALICIOUS

PDF

77.0 KB Created: 2021-03-23 14:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a65747205039fdcfa76a0dcb3b7bbbd6 SHA-1: a14d6dc61b83afa108348be836f766729e825896 SHA-256: bcb7473080efb26e02edfa6dede58c58f898294f04f4749f03c1d29fa8c3a2b0
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-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://resalured.ru/wix?keyword=double+angle+formula+worksheet+with+answers PDF link annotation
    • http://spoonnumberone.xyz/lutokubugadaze7l01g.pdfIn PDF document text
    • http://vudifabofugejij.medianewsonline.com/sufezatekuki.pdfIn PDF document text
    • https://wegudogixudefup.weebly.com/uploads/1/3/1/4/131438345/nejegepirun.pdfIn PDF document text
    • https://cdn.sqhk.co/juviwonu/l2xjwd8/axa_xl_annual_report_2017.pdfIn PDF document text
    • http://badgesverified.com/perimeter_of_polygons_worksheet_4th_gradexutgh.pdfIn PDF document text
    • https://kerumeso.weebly.com/uploads/1/3/4/6/134641164/badawag.pdfIn PDF document text
    • https://ginubeputugexow.weebly.com/uploads/1/3/0/7/130738710/7445113.pdfIn PDF document text
    • http://jusapp.club/8836601914pnnen.pdfIn PDF document text
    • https://cdn.sqhk.co/pepegizeso/ijmgehg/77079796312.pdfIn PDF document text
    • http://simcars.ru/wamagakanofulagalavuc780.pdfIn PDF document text
    • https://woluxubofij.weebly.com/uploads/1/3/1/3/131383763/4518418.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/gfjb5gj/savowuwuwunopidanuwef.pdfIn PDF document text
    • http://tafakiduwav.scienceontheweb.net/hernia_abdominal_en_gatos.pdfIn PDF document text
    • https://cdn.sqhk.co/zamokaxu/WDiahfM/virus_scan_online_upload_file.pdfIn PDF document text
    • http://nedavupagisezim.mygamesonline.org/autonomous_driving_levels.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/what_are_the_three_appeals_in_writing.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/spggyib/fivenesafixisimujew.pdfIn PDF document text
    • https://zuseluxutiv.weebly.com/uploads/1/3/4/6/134686448/weriladokalofafali.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/55226202871.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_b7a673ff0b2a4f0dbcf637ee5daae4eb.pdf?index=trueIn PDF document text
    • http://tofalit.myartsonline.com/nanotechnology_in_the_agri_food_industry.pdfIn PDF document text
    • https://1e16da7b-5b4f-4122-a3c4-5c88c9d97cf7.filesusr.com/ugd/83f04e_1bfd4dd091ca4812a2a6373584dd09de.pdf?index=trueIn PDF document text
    • https://db38eef3-7d65-43a4-badd-ba39ed7d9417.filesusr.com/ugd/bd2483_e8c3833419b4437bad76761f5ebbb5bc.pdf?index=trueIn PDF document text
    • http://nodikaduf.onlinewebshop.net/811877901.pdfIn PDF document text
    • https://8dac4d01-2cd1-45d2-8b5f-6005f802adc9.filesusr.com/ugd/1f96ce_15647facf1884ec28f591ce62c2fa29d.pdf?index=trueIn 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_off0000ed91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED91 5476 bytes
SHA-256: 6582d206344f7e3272e02f1f4e97422907a16564f696697d39fc8a23c02a05e2
font_01_sfnt_off00010022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10022 10984 bytes
SHA-256: 5ec8205d0b67888892c411c3b296110b75286a75ffad448ce809b9cce79a6697

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