Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b1cc34f4755adf…

MALICIOUS

PDF

80.0 KB Created: 2021-03-31 06:04:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e2d17fccf2f8ae388345390529f34567 SHA-1: 505a5b309925581f8e8c3029c5e0310b3462ab3f SHA-256: 42b1cc34f4755adf12b848ba2294b2b1d303abdba4b29690005709dfc7b796c1
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 0.9997

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://lozipotod.ru/award?keyword=formulaire+les+algeriens+nes+avant+1962+pdf PDF link annotation
    • http://tiktokcopyrighthelpteam.com/personajes_principales_del_libro_bodas_de_sangremlcyi.pdfIn PDF document text
    • http://findattime.com/dxg_3d_camcordermwd3h.pdfIn PDF document text
    • https://cdn.sqhk.co/xumupojamax/Ria6Fib/giferisazapalofeporas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486350/normal_5fe695a536f5f.pdfIn PDF document text
    • http://metalllift.ru/asus_z97_pro_ae_code5u53i.pdfIn PDF document text
    • https://cdn.sqhk.co/komagiju/lhdwX2S/28456658008.pdfIn PDF document text
    • http://zegiwire.sportsontheweb.net/midas_touch_book.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/HGfWDih/joker_wallpaper_hd_download_for_android_mobile.pdfIn PDF document text
    • http://f1l3download.site/90396407830bjlqg.pdfIn PDF document text
    • http://meinekarten.best/1646267105832aze.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxujagemo/bbhbVg5/vanilla_wow_mining_guide_1-_300_alliance.pdfIn PDF document text
    • https://cdn.sqhk.co/fakujodi/ejhmkfS/xotovusiweratifizuwulu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372980/normal_5ff977836bbb0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1e16da7b-5b4f-4122-a3c4-5c88c9d97cf7.filesusr.com/ugd/83f04e_4c4c05a4602f4bf890411cf21615a108.pdf?index=trueIn PDF document text
    • https://ec679cc6-872a-45a8-b2fd-b1bc8f6ddb77.filesusr.com/ugd/d1d005_1cb0f195229143889aa8762adef0e9de.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2adddcd-0bde-4f6e-86f1-2ca4ed56c0f3/nuxolamovosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4765cc64-d1ca-48ba-b73a-b044817f1c39/interior_design_canada_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ee8d805-0b1b-49f2-838e-e701994abb2c/62063603004.pdfIn PDF document text
    • http://zevusup.atwebpages.com/ditog.pdfIn PDF document text
    • https://968bac2e-1409-45a7-bd11-2c37eba47390.filesusr.com/ugd/c81504_076aec1f8e614d53b69b9acad86c070b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/44252b9a-c55f-4d0c-b7db-5a0a12f55891/vikiluwelowiwenuroleja.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_off0000f58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58F 5872 bytes
SHA-256: 58e9412748bfa733b45c0ce8d521403f4fcedf76d9d6baacb80a74d32cff950b
font_01_sfnt_off00010983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10983 12452 bytes
SHA-256: 8676f9a620d9230bbd15afe1595cb652eab40b18ccc96fe7930e084a1104e7a8

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