Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e814fa70429b38…

MALICIOUS

PDF

79.3 KB Created: 2021-03-07 18:09:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: ee7e7bcc6e0f9f1271e9705f7f21badc SHA-1: 867839d60b7a524866ba4db947ec8a89cbd52be7 SHA-256: d9e814fa70429b38941b9dd6e46b7855a55ea9427ef9624cd4ba6d4b1164396a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a high number of embedded links pointing to various domains, many of which are flagged as disposable or unknown reputation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URIs and link farm heuristics suggests the primary goal is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/award?keyword=is+nissan+murano+reliable PDF link annotation
    • http://new-leggins.site/unified_portal_epfo_java_settingsxjbki.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/zixebuzikunisebo.pdfIn PDF document text
    • http://mazejofeg.mygamesonline.org/mojazoviwivunesugodo.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/black_ice_key_and_peele_transcript.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/sugajuwuxexojekese.pdfIn PDF document text
    • http://tawexowupa.22web.org/computer_bookkeeping_solutions.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/zabixusasuv.pdfIn PDF document text
    • http://begemotiks.fun/819030729955yst.pdfIn PDF document text
    • http://haustova.com/invacare_lift_battery_charger_manualusnqr.pdfIn PDF document text
    • http://warupipujamoru.sportsontheweb.net/los_tipos_de_funciones_del_lenguaje.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://zetitovafe.rf.gd/27538221265.pdfIn PDF document text
    • http://witoluteg.epizy.com/brene_brown_vulnerability_ted_talk.pdfIn PDF document text
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_e8c0db992e424f79aeb2e7803dfb7baf.pdf?index=trueIn PDF document text
    • http://supuwevul.atwebpages.com/jazak.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/marks_and_spencer_online_job_application_answers.pdfIn PDF document text
    • http://gagarereforer.epizy.com/defeat_decisively_crossword_answer.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/23425933027.pdfIn PDF document text
    • https://fbaba6ab-37cf-477f-82bd-e10a416eccda.filesusr.com/ugd/3c8574_2228e9bd4712414f9433df111807fc27.pdf?index=trueIn PDF document text
    • https://e50eee24-2d95-422d-8083-6f618d95927b.filesusr.com/ugd/594ae5_84e46c9956ab4358b31be8f479267605.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/christmas_songs_flute_sheet.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_off0000ed46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED46 4712 bytes
SHA-256: 00a63fde77b3f3295bea18b83fae999f5cefa6d688defed1f23595ed2c8bf3e5
font_01_sfnt_off0000fd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD12 10700 bytes
SHA-256: f21c968f581dd881f388bfad554e1fa2c8937841b3579944b63f28a88e485fe9
font_02_sfnt_off00012176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12176 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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