Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8843258feb27e69…

MALICIOUS

PDF

103.3 KB Created: 2020-12-09 11:37:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8d64b6ac548e103ab4781593f85efeaf SHA-1: 08ce1613558164b05df3b7aa9221389fcef6e433 SHA-256: e8843258feb27e691aed5d348bbba2c04b80affc224d003aa5a55f654c90cac3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/aws?utm_term=designated+survivor+imdb+episode+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373522/normal_5fa5bb1571601.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384459/normal_5f8dc7f5a90aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407304/normal_5f96d1ee2249b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406497/normal_5fa069d772cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451549/normal_5fc105428d6ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bd8694a-2ecd-476f-b170-56806bd77c6a/66690000558.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe098d7acac6192a879efc/1606289805977/southern_auto_salvage_in_longview_texas.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc07d836b97992eb55a0df7/t/5fd00458e39aae34910f3438/1607468121436/feudalism_short_definition.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c3d560f2895dc1e72903/t/5fc13a96eaf37e3b64c8cb30/1606498966990/400_grams_chicken_to_pounds.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5778f405d5340f3487ee4/t/5fc6d2e2a907d7439cc7b9db/1606865635529/kubeguwipilutimovelil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c5aef7cf8c75404c2941/t/5fcbad360814be4f73ee90f5/1607183671226/3849726659.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7aeac02915d4a16fa01ec/t/5fcd63662fa8bc6bcdfc14df/1607295846485/green_party_symbol_us.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/maxikakosojulakigumajusas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e736f4-8242-410d-a29b-ed38e7f5399b/inner_conviction_poe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27d2011f6a419848fbce5/t/5fc8f886850d53008015c96f/1607006344536/fadefujugi.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_off0001415b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1415B 6444 bytes
SHA-256: 261be24c9769fb4aa1ae9941bf315985c8238c051a007b0b87358bb1cccb59a3
font_01_sfnt_off000156f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156F8 5444 bytes
SHA-256: 7c1a886faa331ddeea9024188b5f65ce0c9f00df53e108a2d9407195a7a29251
font_02_sfnt_off00016971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16971 11288 bytes
SHA-256: 63725149f5e5292bb1182263c0163ec7228edc788c2cd48af8bc04c32f873317

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