Malicious PDF — malware analysis report

Static analysis result for SHA-256 db414c65e0929d3f…

MALICIOUS

PDF

159.9 KB Created: 2021-03-14 06:46:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 14d4e996728810a246cfbb0c9b6b32b9 SHA-1: 182c72d28fdad1e597cf02e96bf5812ad3fa8683 SHA-256: db414c65e0929d3fe30ed6206115bf2a67674714423b3ee01a92f5bdfb9f7c01
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/wix?keyword=holt+handbook+third+course+answer+key+chapter+1 PDF link annotation
    • http://tehnikator.ru/60434603513hk0hr.pdfIn PDF document text
    • http://lipuwisapi.mywebcommunity.org/types_of_bacterial_toxins.pdfIn PDF document text
    • https://zogowejodumuf.weebly.com/uploads/1/3/0/7/130775171/ceb16a8.pdfIn PDF document text
    • http://palitra-cveta.ru/what_are_the_responsibilities_of_a_software_development_managerc56sm.pdfIn PDF document text
    • http://solusaxisabo.scienceontheweb.net/michigan_medicaid_providers_manual.pdfIn PDF document text
    • https://fomimixa.weebly.com/uploads/1/3/4/7/134775862/penudomekoz.pdfIn PDF document text
    • http://tiwilofojifig.sportsontheweb.net/realism_and_anti_realism.pdfIn PDF document text
    • http://7lessons.space/themeforest_responsive_html_templates_freerd35v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jonesojawu.myartsonline.com/teaching_english_as_a_second_language_-_perth.pdfIn PDF document text
    • https://13fad4bf-7224-44b3-802b-16842e97d241.filesusr.com/ugd/b14664_eb76a355bce747338d6f0ae553f9423e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/falufusu/rogumimusafalopuf.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/anti_corruption_sindh_jobs_2017_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a9873d6-6b42-4be6-be28-90d873be4be0/17325800222.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/lithium_evanescence_music_sheet_piano.pdfIn PDF document text
    • https://3d3b31fc-6152-41c7-b1d4-a4af3afcce63.filesusr.com/ugd/3f8d85_afc9073e8d574bf184f9dc57e5625d24.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fac5f101-8b2a-4c33-96ae-3f871a529154/luwugiwi.pdfIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_8505d8c39f4e43d296c684d027abd28c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/compressione_adiabatica_formule.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/mibuguxabewafeguxiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9f3a18a-d646-4455-8b9a-85c86ab2133e/bram_stokers_dracula_book_online.pdfIn PDF document text
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_8ba94769064e4480ad44d905b949b334.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ba861c5-a614-4086-8dc5-8adf81e41fe1/39104838890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d17fe6b8-002e-42e2-8b10-2810f857acf1/lirik_lagu_dan_kunci_gitar_charlie_puth_one_call_away.pdfIn PDF document text
    • https://7f1d4f38-7308-4051-b389-b8ed31312188.filesusr.com/ugd/e948c1_de08b72f514f4d19bcb9889fd347488b.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002146d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2146D 5572 bytes
SHA-256: ab871992053d99698d3cc33a0a580ff6ce5c9aada3dcc83185f7cd6406e21f26
font_01_sfnt_off00022768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22768 18196 bytes
SHA-256: 51faf22690d54bff8d5ea49cf5f44151ff5f5c648aafb5a55ac286b91f06b620
font_02_sfnt_off00025bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25BC9 16248 bytes
SHA-256: 9e020c854edd9d16e76d4d276d806d6ad9537766fc0f49e31c6b0dee74960295

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