Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1dc864e2b9d379d…

MALICIOUS

PDF

78.0 KB Created: 2021-03-07 21:33:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b8decaf669b4134b582b66f0f35dace0 SHA-1: 9e314f9c70a24ad5ab1c37380b7adac8e3a1aada SHA-256: c1dc864e2b9d379d9f8242a8f0cc984ef38a4467ca96ac7e7bc6271ac51d36ab
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://dugedepap.ru/wix?keyword=brilliant+traces+play+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466367/normal_5fd24d7ba14f4.pdfIn PDF document text
    • http://pakizimavom.scienceontheweb.net/lanonasogariju.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/lord_of_the_rings_all_parts_in_hindi_free_download_dvdvilla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461523/normal_601b3f007d748.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/ckAjagd/64891620797.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451230/normal_602c12ccca02a.pdfIn PDF document text
    • http://faxusupovetek.sportsontheweb.net/maytag_bravos_washer_not_spinning_properly.pdfIn PDF document text
    • http://jarewitof.mypressonline.com/the_adventures_of_sherlock_holmes_chapter_1_summary.pdfIn PDF document text
    • http://gipogup.sportsontheweb.net/75187534324.pdfIn PDF document text
    • http://bilet-pdd.site/standoff_2_apk_mod_menuzzqah.pdfIn PDF document text
    • http://bokaxakoz.sportsontheweb.net/3726653930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_5fd35697311ba.pdfIn PDF document text
    • https://cdn.sqhk.co/tivomepu/iahea9Y/netunuxawitomav.pdfIn PDF document text
    • http://remastacer.com/135542261dp86m.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/does_canadian_netflix_have_pretty_little_liars.pdfIn PDF document text
    • http://save50it.pro/mississippi_drivers_license_office_corinth_ms7l4rp.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/clXc0ie/nikon_photo_transfer_app_for_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7a579b3f-ce96-4c66-abdc-991530493d29.filesusr.com/ugd/010c6b_67728c3e42b54c56b1003191a9a2e6f6.pdf?index=trueIn PDF document text
    • https://6cb1c90e-07cf-4522-b85d-4edd8abc33c8.filesusr.com/ugd/0c41e7_ecb1c695a1054da6998715bfdb581124.pdf?index=trueIn PDF document text
    • https://f9c380c0-3c9a-404e-8c76-a924832b335c.filesusr.com/ugd/9c8fb9_d150d081fd9040e58b4278d031baa016.pdf?index=trueIn PDF document text
    • http://xomutojekes.myartsonline.com/18928334229.pdfIn PDF document text
    • http://siwemoxoxawevuv.atwebpages.com/corsair_cx_series_cx750m_review.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_off0000f475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF475 5300 bytes
SHA-256: 2cbe037767b2856fc66e555080a99ace68229c5cee8d9196998c496679d98e51
font_01_sfnt_off00010695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10695 10476 bytes
SHA-256: 95f1cb9e5d5e2d33cfbc796b87978e4f31f105202cb19380e0318398d8bcf11e

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