Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac33232e048e45d…

MALICIOUS

PDF

56.6 KB Created: 2020-12-04 13:53:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ee7a16f71e6e54d951ad0724a9a1f71b SHA-1: e0b9c3381c6e8bb27ab2ca79c2cf00bde39132db SHA-256: eac33232e048e45dcc47f148d8ec6abc433fd4a370decb573df1e6d535153dd4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ggtraff.ru', a known malicious domain. ML classifiers and ClamAV also flagged this file as malicious. The embedded content, though heavily obfuscated, likely serves to facilitate the redirection to the malicious URL, which is a common tactic for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/aws?utm_term=indonesia+report+2019+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f90486391937.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486742/normal_5fbe316a5baeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_5f897fde3b88a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393893/normal_5fc473fe9cd37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413583/normal_5fb9fd9c2a6ca.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/504da2f9-fa02-430b-8cec-bf5d1656bc57/wuzokagepijenefofigu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1045e18c5c478ec35380/1606291525941/pobojopijemurixurumeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d660dcba-e0c9-49f6-abca-fc4e77492fd8/xatasopimelofebuzameki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a861a1e-f28a-43b0-b21c-5bc4e03868d7/antique_tractor_price_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8335b411-e6df-4219-b87c-9daab9620699/the_office_songs_season_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3faa04da-daf1-40f9-b0a3-5fbed758c924/korofonamipaxo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9fec917750a3d7b949/t/5fc36fc661e25426e1a40423/1606643655313/phantom_electric_supercharger_prix.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA670 5424 bytes
SHA-256: a4695374c3219b0f669d356fcc04737dab17aab25eafd9d5dc6206b592d5b223
font_01_sfnt_off0000b8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8ED 8544 bytes
SHA-256: dd1f0937e112ba963e8906baaf15ebe5c20ae8c2e5753ac63d51d988752d55b8

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