Malicious PDF — malware analysis report

Static analysis result for SHA-256 549b059d56aafd15…

MALICIOUS

PDF

140.2 KB Created: 2022-06-11 11:55:24 +02:00 Authoring application: wartkar (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: d40a744aa1c5c2da62b3a5f9deac7860 SHA-1: d05d2290546ee0d3ca19db4f21197a8103a337de SHA-256: 549b059d56aafd15335dcc6c87359407f71e291bb43dde32ac1d76c3e5bbf7f9
64 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to distribute malicious content. One of the primary URLs, http://evacdir.com/comebacks/bexxar/..., appears to be a direct download link for a payload. The document body is heavily obfuscated and does not provide clear textual lures.

Machine Learning

  • Nyx PDF Classifier clean score 0.0115

Heuristics 3

  • 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
  • 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 http://evacdir.com/comebacks/bexxar/ZG93bmxvYWR8cm8wYmpBd2NueDhNVFkxTkRnNU16RTVNWHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA/SEQgT25saW5lIFBsYXllciAoZG93bmxvYWQgcnVyb3VuaSBrZW5zaGluIG1vdmllIDIwMTIgKQSEQ.emitting?seller=recoiling= PDF link annotation
    • https://www.passoverlistings.com/wp-content/uploads/2022/06/quakail.pdfIn PDF document text
    • https://enricmcatala.com/pulp-bukowski-pdf-italiano-download-updated/In PDF document text
    • https://bizzclassified.us/advert/best-seo-company-in-noida-seo-services-agency-in-noida/In PDF document text
    • https://revelandrest.com/wp-content/uploads/2022/06/Pentaxtotalstationsoftware12.pdfIn PDF document text
    • http://www.ecomsrl.it/windows-10-digital-license-hwidgen-62-01-generation/In PDF document text
    • http://insenergias.org/?p=7807In PDF document text
    • https://telebook.app/upload/files/2022/06/9bmAboeBpRBLvxOq2v8R_11_3fa576d8d2ad072dab6eff2bef09669f_file.pdfIn PDF document text
    • https://fraenkische-rezepte.com/wp-content/uploads/2022/06/Jam_Origin_Midi_Guitar_Mac_Crack_Software.pdfIn PDF document text
    • https://buzznewstime.com/stadium-importer-exporter-0-82-download/In PDF document text
    • https://spacefather.com/andfriends/upload/files/2022/06/7u6WPT5LkPHqLa3eCHgd_11_3fa576d8d2ad072dab6eff2bef09669f_file.pdfIn PDF document text
    • https://parleafrique.com/wp-content/uploads/2022/06/Genius_Sw_N5_1_1000_Driver.pdfIn PDF document text
    • https://dronezone-nrw.2ix.de/advert/digitalworks304fullversion/In PDF document text
    • https://tarpnation.net/download-cd-jota-quest-ao-vivo-2003-30-new/In PDF document text
    • http://imbnews.com/calul-alb-film-indian-download/In PDF document text
    • https://insightkorea.or.kr/blog/index.php?entryid=3566In PDF document text
    • https://inobee.com/upload/files/2022/06/JTqCvtTdwUDFTNdprk9T_11_3fa576d8d2ad072dab6eff2bef09669f_file.pdfIn PDF document text
    • http://iptvpascher.com/?p=10039In PDF document text
    • http://www.brumasrl.com/en/codex-wave-table-synth-cracked-better/In PDF document text
    • https://aprendeconmontessori.com/mitek-woodengine-v-5-1-21-4-27-top/In PDF document text
    • http://uniqueadvantage.info/kasturinivasacolourmoviedownload/In PDF document text
    • https://spacefather.com/andfriends/upload/files/2022/06/7u6WPT5LkPHqLa3eCHgd_11_3fa576d8d2ad072dab6eff2bef09669In PDF document text
    • http://www.tcpdf.orgIn 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/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000010d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10D4 120140 bytes
SHA-256: a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
stream_009_off0001b1f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1B1F8 119072 bytes
SHA-256: df221e87b81d1531cafdadb6c09a602e9f604d1baf0a17bbd350cbb83baa06f7