Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e7041408546a8a…

MALICIOUS

PDF

81.9 KB Created: 2021-03-23 04:09:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4ba370530a06ae9f9998d23c0cc5ec7f SHA-1: fe82b087414a5f2ab9f5e9134826561ee00d1031 SHA-256: 74e7041408546a8a0437c768d63935d10f9211e7f713223f2b9fea6177e74801
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 0.9995

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://crophysi.ru/wix?keyword=ap+government+and+politics+study+guide PDF link annotation
    • https://cdn.sqhk.co/bosesegivu/igecibu/kisaxafemekavopipesuxav.pdfIn PDF document text
    • http://gosugas.getenjoyment.net/bangla_dua_book_free_download.pdfIn PDF document text
    • https://vamekatowozi.weebly.com/uploads/1/3/0/8/130814347/ac569907.pdfIn PDF document text
    • http://reduslim-siteofficial.site/ludo_star_2017_apk_download_for_pcdtykr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454543/normal_5feb9e5d6ef9f.pdfIn PDF document text
    • https://sinekamawo.weebly.com/uploads/1/3/0/7/130776883/gemexijepigetep.pdfIn PDF document text
    • https://cdn.sqhk.co/pemenixa/Ggeqiaw/1332626679.pdfIn PDF document text
    • http://pukujadud.getenjoyment.net/convert_html_to_in_laravel_5._2.pdfIn PDF document text
    • https://cdn.sqhk.co/gojinuma/fjgscig/29238643662.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/ggeichi/nintendo_switch_multiple_accounts_on_one_console.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/81944940270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_60486f07328d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465688/normal_603e299b069d5.pdfIn PDF document text
    • https://dasubafetimediz.weebly.com/uploads/1/3/4/6/134673415/soziluditegadadom.pdfIn PDF document text
    • http://pankreatitum.ru/browning_bps_problemsv51ja.pdfIn PDF document text
    • https://guzagotoxi.weebly.com/uploads/1/3/5/3/135313280/2e3ccdbf9eb2f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488133/normal_5fcc60956bf0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470980/normal_5ffe6caeda5eb.pdfIn PDF document text
    • https://jexetapi.weebly.com/uploads/1/3/4/3/134345775/145f6ef28827473.pdfIn PDF document text
    • http://kuboduzuke.mypressonline.com/34817703656.pdfIn PDF document text
    • https://cdn.sqhk.co/vumatoxikom/iAgjrCY/tojitilapigubotes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koradanizepagow.myartsonline.com/libro_bls_aha.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_off0000f0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AE 4652 bytes
SHA-256: a45363713eae053f3e2f8cc669300ac1e6a6206d61f85dce1574a0a42f39ff33
font_01_sfnt_off000100fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FC 5544 bytes
SHA-256: b937969aeece1f3dc031c8e250c4974d5305aa7009b72677aad2d20a3d2fca7b
font_02_sfnt_off000113d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D1 11320 bytes
SHA-256: fe0e1c4aa127cc7959acc1611f200f9d3fac97b13f95fe855c4a260faf24bedd

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