Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb80ac745df69863…

MALICIOUS

PDF

83.8 KB Created: 2021-03-28 05:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 656169a951cc06d6b4782428cca360df SHA-1: 116ab7831bc7be52dbde71af682ec6cf46708653 SHA-256: eb80ac745df6986371c78c14742b61038a8382e1e069bad8e6652e84c0a8cff6
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document is classified as malicious, exhibiting characteristics of a phishing or trojan delivery mechanism. The heuristics indicate it functions as a link farm on disposable hosting, with one primary URL pointing to a potential payload. The document also contains lures related to clipboard commands and password-protected archives, suggesting an attempt to trick the user into executing a second-stage payload. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?utm_term=bootable+windows+7+dvd PDF link annotation
    • http://janorewaxeno.mygamesonline.org/53722309820.pdfIn PDF document text
    • https://babaperivagam.weebly.com/uploads/1/3/1/3/131379833/1365003.pdfIn PDF document text
    • http://xufotegebiv.22web.org/85761064506.pdfIn PDF document text
    • https://xoxopurotawasuj.weebly.com/uploads/1/3/4/6/134651309/a11947963c.pdfIn PDF document text
    • http://wubufusimeveve.22web.org/40434317807.pdfIn PDF document text
    • http://dukobotabagujam.22web.org/tibonopaz.pdfIn PDF document text
    • http://riniwovefaraw.22web.org/technical_business_writing_book.pdfIn PDF document text
    • https://puzejiwitamino.weebly.com/uploads/1/3/1/4/131453698/kuluretosazezura.pdfIn PDF document text
    • http://rovepofaji.22web.org/857893103.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/fifty_shades_of_grey_actor_name.pdfIn PDF document text
    • http://xiredanu.22web.org/brahmanic_system_of_education.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/brassage_de_l_information_gntique.pdfIn PDF document text
    • http://suwetobolubujub.getenjoyment.net/jamuvojej.pdfIn PDF document text
    • https://muxupodijem.weebly.com/uploads/1/3/4/8/134885552/b475f0bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://soxomidil.epizy.com/rapafusaravutaxirurome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4801c96b-c5f7-4a1c-9044-82098fd6f6c1/how_to_use_healthmateforever_tens_unit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96da43b2-a913-40a0-b552-e4e92d9c5e16/pagurosagib.pdfIn PDF document text
    • http://malinaliwul.epizy.com/lovakivor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/106263a6-12bb-4faa-a7bd-89d39d32f4ce/whats_healthy_at_pollo_loco.pdfIn PDF document text
    • http://juvusowupu.onlinewebshop.net/precalculus_online_textbook.pdfIn PDF document text
    • http://nixomirorubu.myartsonline.com/wumobiviwasa.pdfIn PDF document text
    • http://kovaganobo.rf.gd/diccionario_portugues_espaol_completo.pdfIn PDF document text
    • http://kalilom.epizy.com/moxosusobexosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3bbe76a-7f18-4895-a72f-a148d43a465a/30788575716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5da4dbda-f85d-4b04-806e-5f7c1e30c60d/xomifepuji.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_off00010b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7B 5144 bytes
SHA-256: 7ddf9884a81e54e9dc12d3cb9d52e4d57d39febf2e5f0c4737be104c7f07d31c
font_01_sfnt_off00011d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D28 10904 bytes
SHA-256: c29fde32dbd1ecfc3b8a13ba0b278d6a3efec05b85f32e1d99f542a1c5793dbf