Malicious PDF — malware analysis report

Static analysis result for SHA-256 c049a7e7a2a7113c…

MALICIOUS

PDF

73.9 KB Created: 2021-03-31 22:34:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 61e16357409a94d262432797003be0d5 SHA-1: d4cfd6cbbb83220279dcad97407cbb5f3d92bb6f SHA-256: c049a7e7a2a7113c55609482953097dbb65427db5cdc2be4250072f7051b97a1
196 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. It uses a password-protected-archive lure. 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 0.9996

Heuristics 6

  • 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.
  • 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
  • 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://seumenha.ru/123?utm_term=atmega32+datasheet+complete PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/pokemon_glazed_walkthrough_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/14382232985.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/bupaxuvewopef.pdfIn PDF document text
    • http://likadekax.rf.gd/arduino_cnc_grbl_tutorial.pdfIn PDF document text
    • https://6f4861c6-cdf0-4a5f-ba2d-f9c5e5bfbee6.filesusr.com/ugd/77941b_aa03a8a0039a4a53b25a7b386e309966.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/petubapizo/76611603078.pdfIn PDF document text
    • https://755d026c-fd58-4633-9ca9-8af24261f473.filesusr.com/ugd/4622eb_6be3982510ff419997d51dba6da6b31d.pdf?index=trueIn PDF document text
    • https://592908bf-dd96-48cc-88d9-ffebbdd10d84.filesusr.com/ugd/f34823_b32f5061e6684f458d6f43abdfcb7c75.pdf?index=trueIn PDF document text
    • http://bavidoripo.epizy.com/does_prayer_help_depression.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/sijovuwokojirejokobuxuz.pdfIn PDF document text
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_247ac7e86af84c278ebd9b12815fa66d.pdf?index=trueIn PDF document text
    • https://1580f21e-fc75-4350-9669-3be8b7525729.filesusr.com/ugd/eff6cf_6b8ba21add8d4bd6a21178781667355e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lewuli/smartsheet_project_management_excel_templates.pdfIn PDF document text
    • https://53f03ce6-db0b-4f41-9bfc-6956ba41e1f4.filesusr.com/ugd/727e0f_ac191b7f55c0473cb52bb53e79083692.pdf?index=trueIn PDF document text
    • http://lemaponu.rf.gd/zilonefowumivemadinotuj.pdfIn PDF document text
    • http://jegerusomeku.epizy.com/sitemap.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/nobodosexuwumoxuwufawewa.pdfIn PDF document text
    • http://pesovadilogikem.rf.gd/cours_capteur_de_vitesse.pdfIn PDF document text
    • https://c84ffda1-e72a-45fa-8ce8-a771970cf326.filesusr.com/ugd/9fd656_377e3d41638b43ff9bd5a72b37889f03.pdf?index=trueIn PDF document text
    • http://jerovesunok.epizy.com/interior_design_basics_book.pdfIn PDF document text
    • http://tixokozatupevoz.rf.gd/46568950898.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/director_of_business_development_job_description_template.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_off0000dfca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCA 5676 bytes
SHA-256: 0c9d142ff583e033fac1236cd8ab7199ccebcd6673270ead7398f7324bcea42d
font_01_sfnt_off0000f2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FA 11152 bytes
SHA-256: 5e334384b21e3a66caad88425c4dfc401e8ec8c61b0cecb882a93aa2542420fd

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