Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be83a63610f93b9…

MALICIOUS

PDF

79.6 KB Created: 2021-03-18 04:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: eaa5017ae2e801338b4cf1a34e00d597 SHA-1: b2d52a0ccb127480657cd797b9f85f5846353d1a SHA-256: 8be83a63610f93b987bd66edb8211b949cc91695c4ad9f1f05f175306fe2f7f0
156 Risk Score

Malware Insights

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

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 0.9828

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=samsung+dw80j3020us+filter PDF link annotation
    • http://zawirimo.22web.org/fejufiruvinuritamon.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/giIihgI/vr_roller_coaster_six_flags.pdfIn PDF document text
    • https://zulijijala.weebly.com/uploads/1/3/0/7/130740393/zedumepinir-wefoli-falaxinitepoj.pdfIn PDF document text
    • http://jikovuruwigifan.iblogger.org/btc_course_form_2019-_20.pdfIn PDF document text
    • https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/riwaxuboleje_kidomo.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/qOAphbC/kiloji.pdfIn PDF document text
    • http://tanifulumu.iblogger.org/pomin.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxujagemo/tjaibjf/atomic_bomb_facts_and_information.pdfIn PDF document text
    • http://sorulaxawo.iblogger.org/java_programs_with_output_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sobutexe/FVjPHhb/90727316544.pdfIn PDF document text
    • https://luxefelukij.weebly.com/uploads/1/3/0/7/130775337/4155860.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/t3digha/nhl_2020_to_2021_schedule_release_date.pdfIn PDF document text
    • https://womarunere.weebly.com/uploads/1/3/4/3/134315700/jezilin_wetatusepitedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/azureus_vuze_dutch.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/cannibal_ferox_free.pdfIn PDF document text
    • http://nareboveridur.epizy.com/calibre_free_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/lapubud.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/88059697497.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/tirugu.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/89452537260.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/compelling_conversations_eric_roth.pdfIn PDF document text
    • http://xusazaja.epizy.com/9679408806.pdfIn PDF document text
    • http://tuxizowivu.rf.gd/fogipix.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/halex_electronic_dartboard_with_parlor_cabinet.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/auditing_and_assurance_services_eilifsen.pdfIn PDF document text
    • http://vutaxinasiva.epizy.com/32313688726.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C2 6132 bytes
SHA-256: a3ef19fa879153421706924c8d82d8e21b7f1cd60ae79eac1cc67a21a86ead42
font_01_sfnt_off00010c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C97 10652 bytes
SHA-256: 6e6a43cdd3c44f1295fbfb4e92a7b26de866e6c35e6b75ec01bb0b921a34a2a0

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