Malicious PDF — malware analysis report

Static analysis result for SHA-256 af6d1861d14afe64…

MALICIOUS

PDF

77.6 KB Created: 2021-03-22 22:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 59b483b0f0991b4a8341b600f43629bf SHA-1: 9412e1fd47f1fe91820d595c1ecb4b8ba43589c9 SHA-256: af6d1861d14afe64447812470d4d667a88ef185111733871b346cb20d4597fc4
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 0.9996

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://jottigo.ru/wix?keyword=dragons+world+hack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384159/normal_5fd8140bce738.pdfIn PDF document text
    • http://pusikoxelumide.iblogger.org/xapefaxezixijog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_60587adf44c20.pdfIn PDF document text
    • http://wersita.fun/19596836576h0us7.pdfIn PDF document text
    • http://antonioit.fun/free_printable_alphabet_letters_coloring_pages1obeo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5fd7a9189ec1a.pdfIn PDF document text
    • http://rajenajodaf.iblogger.org/fowubejuginip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486220/normal_603ac7f27d0d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393763/normal_5fe47ba8e7894.pdfIn PDF document text
    • http://mavito.online/fotalojizufenalafi796lm.pdfIn PDF document text
    • http://keksik24.ru/directv_genie_2_mini_clientkhxun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489240/normal_604e4c4c592e0.pdfIn PDF document text
    • http://thebesthack.neIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/daxemo/monthly_budget_spreadsheet_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeacdf44-c1b7-4b35-87b5-9c6ba665fbc2/webabusebimeturomuti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6bc65ef-6e48-496c-b188-883775187e80/quadratic_inequalities_worksheet_kuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf18ca60-a73b-4daa-a378-25d60e877f82/wopajepugikivaminejo.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/74394052393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c8f00a3-07c3-47f7-b871-d5cd368142c9/87528055794.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/business_management_for_dummies_free_download.pdfIn PDF document text
    • http://zafurug.epizy.com/action_english_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/bad_habits_maxwell.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_off0000f208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF208 5356 bytes
SHA-256: 328252be17ba2c75e99c1544fc95847a3cd67c286bf2848accabe9af752a4820
font_01_sfnt_off0001044b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044B 11304 bytes
SHA-256: 03433d6eb8097f3aa0d42be9f18e9172ed6b9233346e38b84657823f075dcfde

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