Malicious PDF — malware analysis report

Static analysis result for SHA-256 70067e31458ff1be…

MALICIOUS

PDF

78.0 KB Created: 2021-03-04 17:06:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 488a28f781216b495ea29583282b9111 SHA-1: 6d4d2b5875a24c19382dc448b924937bfece42f8 SHA-256: 70067e31458ff1be4df1b7de347dc2038b92dbaaf4e440f09626a9448b3c2e9b
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, many pointing to disposable domains, and is flagged by ML classifiers as malicious. Heuristics indicate it's a link farm and a lure for clipboard command execution, suggesting it's designed to trick users into running commands. The presence of a password-protected archive lure further supports the intent to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/strik?utm_term=tp+link+m5360+default+wifi+password+after+reset PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380707/normal_5ff12bd555b73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380229/normal_6003179a795d6.pdfIn PDF document text
    • http://podarokinsta365.site/63208587286ws8kp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409604/normal_6008b64d3e371.pdfIn PDF document text
    • http://creditreportfast.info/activepresenter_full_versionfm4ts.pdfIn PDF document text
    • http://it50disconto.info/joey_pigza_swallowed_the_key_chapter_1_summaryu6cht.pdfIn PDF document text
    • http://goshop32.site/wuvudopulivazatusunabo9a4li.pdfIn PDF document text
    • https://legobunisazej.weebly.com/uploads/1/3/4/5/134501617/sakorer.pdfIn PDF document text
    • http://retys.space/vukesanurejakaxabakot39mt7.pdfIn PDF document text
    • http://braco.ru/bts_flute_sheet_musiczl1yb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372074/normal_5fe357ec761a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416144/normal_60207c115950d.pdfIn PDF document text
    • http://heretythere.site/followage_nightbot_commandgibyt.pdfIn PDF document text
    • https://kivuvuvilex.weebly.com/uploads/1/3/2/7/132741385/biparofirofek.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/juduk/sizamelarigirisuzon.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/81310539087.pdfIn PDF document text
    • https://95fbbc11-640f-4658-acdf-6e09da746871.filesusr.com/ugd/e42ee3_af548de6f5c3486181c379f8f3cdbdb9.pdf?index=trueIn PDF document text
    • https://689a2394-1721-4ce0-b6f7-af9f1dc0d621.filesusr.com/ugd/0f5b72_d10b7ecd4ceb4a3b9575b6d5a33df9e2.pdf?index=trueIn PDF document text
    • https://8c1dc56a-a131-4b43-acff-3635b9115217.filesusr.com/ugd/90423f_a4d63e1dd305436e84682f2a89f8943c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/offer_revoke_email_template.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/antichamber_mcpe_map.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/wujunenovenunew.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_off0000f20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20C 5876 bytes
SHA-256: 2e5d62f5938bc5320520d802fe06e4d100770d4f39d90d24797d5d2d1802d8e7
font_01_sfnt_off0001060a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060A 10624 bytes
SHA-256: 8ee8df4feecfd6e6e95f80fe418b9fbff46d46435d243ad86cb23b067e3d9a38

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