Malicious PDF — malware analysis report

Static analysis result for SHA-256 117ce420faa06fab…

MALICIOUS

PDF

76.4 KB Created: 2021-03-28 02:50:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c077ad1ebe1bd077cf2588f240a57ce6 SHA-1: 75c66849ecaf073ea99f6399aa94a8747e3cdafc SHA-256: 117ce420faa06fab7e50d41fa7a610b2b27247600406cc155c95872427470029
186 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. 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 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.
  • 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://dafemum.ru/award?keyword=the+human+body+parts+pdf PDF link annotation
    • https://gakafapokizi.weebly.com/uploads/1/3/5/3/135319358/4270460.pdfIn PDF document text
    • https://begakidiwadagav.weebly.com/uploads/1/3/1/3/131397934/2984791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412996/normal_6016e29d51851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459025/normal_600ee6fe07a58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446773/normal_5fc679f4951e5.pdfIn PDF document text
    • https://wimukesogizat.weebly.com/uploads/1/3/4/6/134639197/5f6a16d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408464/normal_6031b559bc54f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417534/normal_600d5df498924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455672/normal_6058f9d8dca6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472788/normal_5ff194e289a84.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://loxosufodu.epizy.com/9715734943.pdfIn PDF document text
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_547b88f8a1fc446f9b4f141ac8001cb5.pdf?index=trueIn PDF document text
    • http://kamizawub.epizy.com/circuit_court_of_lake_county_illinois_forms.pdfIn PDF document text
    • http://sisumufavezawa.rf.gd/combiner_deux_document.pdfIn PDF document text
    • http://fudinurozoxesa.rf.gd/rangers_apprentice_ruins_of_gorlan_chapter_summary.pdfIn PDF document text
    • https://26aaa629-0581-4e25-ae32-a194504e59ab.filesusr.com/ugd/2d4e87_1e4eb2793e334ddd80a830e3ff4481d3.pdf?index=trueIn PDF document text
    • http://zutosagu.rf.gd/google_script_spreadsheetapp._openbyid.pdfIn PDF document text
    • http://fuxefav.epizy.com/roweduparibosuzo.pdfIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_13f36361ea1c48e1a89d183662465711.pdf?index=trueIn PDF document text
    • http://savoziv.epizy.com/kedalif.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB9 5440 bytes
SHA-256: 2919eeed5afc102ff16f4d48dcc8b51c8e017b5ae17e1309b317dcb7b4f31df4
font_01_sfnt_off00010009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10009 10768 bytes
SHA-256: f1eccb9ed7f3a0471170da228ea58e5848175331083ef820ab4dfe708eca3fe2

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