Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e14090b4e335e9c…

MALICIOUS

PDF

76.5 KB Created: 2021-04-01 23:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bba5178bbff78410bfb15eb53f33ed1c SHA-1: 53d568da48eeabf3e283b2157001ab1bae89bcf7 SHA-256: 2e14090b4e335e9cbddbb2129f853d81de3a4e58458a7f569ef776ee12154149
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 0.9991

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://dugedepap.ru/strik?utm_term=docker+cookbook+neependra+khare+pdf PDF link annotation
    • http://mscgis.net/potty_train_in_3_days_bookz6nhw.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/hp_laserjet_p2015_new_printer_price_in_pakistan.pdfIn PDF document text
    • http://obzorov.site/diferena_entre_radiolucido_e_radioprnd41.pdfIn PDF document text
    • http://raifaisentapp.online/jeroreclrs3.pdfIn PDF document text
    • http://rezotu.xyz/troy_bilt_storm_2410_snow_blower_partsmwbv8.pdfIn PDF document text
    • http://pokypka.xyz/company_brochure_templates_free43ky1.pdfIn PDF document text
    • http://bilkaita.space/psr_e463_owners_manualp8fbz.pdfIn PDF document text
    • http://gratoramaa.space/43860302872xcvf0.pdfIn PDF document text
    • http://capridigi.com/dell_latitude_e6410_gaming_reviewmuc1x.pdfIn PDF document text
    • http://youtube-subscribes.com/878822748514ns2x.pdfIn PDF document text
    • http://brightshopbg.xyz/32770403684iuxx8.pdfIn PDF document text
    • http://latitekiwa.scienceontheweb.net/76073660500.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zogojazaje.rf.gd/putimapotowuxodi.pdfIn PDF document text
    • https://951e66c5-660f-4748-bfcc-a6cc0831133d.filesusr.com/ugd/4967bb_33c8db3f6f3f45ae845c19352f085690.pdf?index=trueIn PDF document text
    • https://6d4a8fb0-9a8a-4850-8aa1-2b5706121c9a.filesusr.com/ugd/ff2e72_6a646bc3227b424197f91681b43de33b.pdf?index=trueIn PDF document text
    • http://medexode.atwebpages.com/70547873472.pdfIn PDF document text
    • https://af30af13-e0b7-4de0-aca7-7783c01eade2.filesusr.com/ugd/9757e7_dfcffc5840754c83af7a72bf6b238912.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/tafasagawon.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/gepiwigofusak.pdfIn PDF document text
    • https://964beff5-d24f-450a-94e2-fa7e9faef44a.filesusr.com/ugd/61158f_64da1dbb929148c4a321bee3c89b3e7e.pdf?index=trueIn PDF document text
    • https://2c91b947-1dd8-401e-ae91-d595f2f75867.filesusr.com/ugd/0af078_498ae21e3b7c432abbe0fc6e829d57ec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xisefowu/formica_basalt_slate_review.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/mewebojodogeb.pdfIn PDF document text
    • http://guradewididexep.epizy.com/govigadoberorupo.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_off0000ebb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB4 5236 bytes
SHA-256: a42e4b9670db1e2842d2c5beff0850c0c7b8231750fbd5046757c6f3d661b101
font_01_sfnt_off0000fd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD83 11568 bytes
SHA-256: eee89bbbce4ff44b4a57aaf954be4a47d911ac6f72f4d1f2a60c481d0983ca32

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