Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5709cc4678b722c…

MALICIOUS

PDF

88.0 KB Created: 2021-03-17 04:33:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ba7c8d0af6ebcb8c30c8e567231cb2b0 SHA-1: 11419b67e499bbefedcb8d51f95fbefdcb3d50d7 SHA-256: e5709cc4678b722ca858f5ccda59b409d44be641131d0697148d35cda718341c
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-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.
  • 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://pelibifir.ru/award?keyword=august+2020+current+affairs+in+tamil+pdf+download PDF link annotation
    • http://subumobo.22web.org/bebezeji.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuzini/eYidQgg/wudewaxolugivizoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393019/normal_6050b675224ab.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/d206igg/80978928978.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/jfhhohj/mccarran_airport_control_center.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385216/normal_60303b76da7fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377704/normal_60117e4b97cf2.pdfIn PDF document text
    • http://durebemidiges.getenjoyment.net/tekowomofijifazakejoda.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/aUHIjfy/59600047110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5fe895152ae37.pdfIn PDF document text
    • http://tesopinafap.22web.org/internet_video_er_chrome.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://wuxegutazaxelox.epizy.com/nanolorebosutemoxijojam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67d79291-f62f-4580-8151-8549adfe82d4/who_builds_craftsman_snowblowers.pdfIn PDF document text
    • http://romezegipoxo.epizy.com/79415448221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09f8fec0-21dc-458d-a9a6-1b8b7db95afd/mapa_de_riesgos_sismicos_cdmx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce876461-a277-4921-bd04-a5cb29f9669e/difference_between_discipline_and_punishment_in_education.pdfIn PDF document text
    • http://zobovobewuw.epizy.com/allah_allah_allah_hoo_lori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d856d1f2-cef9-42c5-aa45-0250136c1c78/dekuzesanokanereviwekedil.pdfIn PDF document text
    • http://zisuvedo.rf.gd/zidirapi.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/ryobi_2000_psi_electric_pressure_washer_price.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAE 5828 bytes
SHA-256: 26c43f3abe3a5f259d82c04c6677209a9ab8775fd7bc1fff0f0bf542222c6e50
font_01_sfnt_off0001028d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028D 15952 bytes
SHA-256: 24f7ff95c606f22a8a210d95c8bff7c6da387990b018915ef14dd9afce8f98d4
font_02_sfnt_off00012744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12744 11772 bytes
SHA-256: 7e5fa6941a507e754d65901117c14a3e22ca0681e7389848417001b92fc029ab

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