Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a2d562039b8bd72…

MALICIOUS

PDF

76.3 KB Created: 2021-06-09 23:22:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2454b05a4b230f93dfd79def80ed327d SHA-1: c67f24f9c3b30c77b3ff0ee40d97294d8c8937a2 SHA-256: 1a2d562039b8bd723a002a45e691afd87765b0ddbb130d25a6bf12b3d7236686
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://irlanc.ru/pbw?utm_term=film+the+diamond+robbery+dhoom+2+full+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495269/normal_605951a783173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_60649409651d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446772/normal_5fe41a5239218.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443624/normal_5fe340109470d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fosirodovo.pbworks.com/w/file/fetch/144982959/pisutibarafevebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3340dbe6-a34e-49c7-bc27-9c0e7ff7af59/what_kind_of_oil_do_air_compressors_use.pdfIn PDF document text
    • http://gegoxelaw.pbworks.com/f/pubuwabus.pdfIn PDF document text
    • http://lakobun.pbworks.com/f/how_do_i_put_my_echo_show_in_pairing_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f02db645-4073-461f-872a-8692ba9ac860/bisobabimatuvepaloselo.pdfIn PDF document text
    • http://jojekepodef.pbworks.com/w/file/fetch/144626781/bubudunofitejijarotupom.pdfIn PDF document text
    • http://zeranagaro.pbworks.com/w/file/fetch/144973854/esp_cheat_pubg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa46fa15-cd6e-4f95-94f0-3964d412dbd8/givigelofatap.pdfIn PDF document text
    • http://sizolasipape.pbworks.com/f/descargar_halo_2_para_pc_gratis_en_espaol_completo_para_windows_8.1.pdfIn PDF document text
    • http://rorazokazog.pbworks.com/f/1995821905.pdfIn PDF document text
    • http://kiletejude.pbworks.com/f/libros_de_harry_potter_originales_en_espaolo.pdfIn PDF document text
    • http://pobonagul.pbworks.com/w/file/fetch/144989658/windows_10_product_key_command_prompt.pdfIn PDF document text
    • http://ziludezubeju.pbworks.com/w/file/fetch/144954669/733031909.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC5 5240 bytes
SHA-256: 04ea28a9567f937cfe22c9def106015655c2157adffdc294200b8713dab9a419
font_01_sfnt_off0000ee70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE70 11060 bytes
SHA-256: 626a1c789def81fd0ed7a852cc8bfffd2adad8c5823d5a0993f6db343aee1d6e
font_02_sfnt_off0001145e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1145E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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