Malicious PDF — malware analysis report

Static analysis result for SHA-256 47184d2f98377e61…

MALICIOUS

PDF

94.5 KB Created: 2021-03-18 10:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c05cde859b7718bed5f64c3c8ddfaaa3 SHA-1: f530c434d150016516cfe518300d405ff504eb99 SHA-256: 47184d2f98377e612937056425c4f610b51c99ca11e8426888e2ec0482bc0c5d
134 Risk Score
Tags
free-cdn-ebook-manual-lure

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 an urgency-based 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 0.9997

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jottigo.ru/award?keyword=an+inspector+calls+book+pdf PDF link annotation
    • http://lnstagramsupportlives.com/aprilaire_800_steam_installation8o70j.pdfIn PDF document text
    • http://hhizmet.com/sibegetegunigivit5nk5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383577/normal_6028138fdeb0f.pdfIn PDF document text
    • http://reduslim-eu.site/is_a_pawn_shop_profitableh47u1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_5fe759cc68b67.pdfIn PDF document text
    • http://yozi.store/twilight_graphic_novel_characterszg1gr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_600c12c263563.pdfIn PDF document text
    • http://jobauthor.online/62655499324ahocu.pdfIn PDF document text
    • http://jewlgems.com/51467680799a0as1.pdfIn PDF document text
    • http://cyberlife.store/dadagikogilofojoz5hw4h.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
    • https://ef2e072a-e8a2-4438-804d-cc750be2e2f6.filesusr.com/ugd/6a22cb_329d8bb0218d4726b0030f6b2e5b39e7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/28158876593.pdfIn PDF document text
    • https://650c977b-0274-48a2-8498-43c0efc39f4e.filesusr.com/ugd/dbad32_0963dad8f21149b0a62a449bc46c6439.pdf?index=trueIn PDF document text
    • https://696f1bd8-06c3-47a7-a8f7-e83e17ec8d18.filesusr.com/ugd/5ad03d_e9405f0899c94b02ad107f255a787055.pdf?index=trueIn PDF document text
    • https://83d12552-0bc1-4415-b221-1da25caacb9b.filesusr.com/ugd/1e11d0_fa395cb4de494a93a803508a2ad9647f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nigimul/60796250177.pdfIn PDF document text
    • https://5a20c861-23fd-468b-888e-078c5342874f.filesusr.com/ugd/924841_61f98313e21e4cce9ab78d08a0474bf3.pdf?index=trueIn 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_off000125c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125C6 5132 bytes
SHA-256: 7ad562139e1e32d3e9a4a7d220559e0c7362e5e91cc9ef2a5ff0499aa9bb2932
font_01_sfnt_off0001372d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1372D 12188 bytes
SHA-256: ca9fd4c8ab39f54a971991fcf8e0bbe175621d908e8e4e8d3ccbc2e0f704b1fd
font_02_sfnt_off00015e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E46 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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