Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c20b77b2768d0c…

MALICIOUS

PDF

78.1 KB Created: 2020-11-14 00:01:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 774e9498a5648b5f072ccdd9fdd278d1 SHA-1: 2feaca224be48370c33d2a0f1e656a497a0d5d57 SHA-256: e4c20b77b2768d0cc17d0ca7f7f4e448dab84ec5ca9a4b5ff21389053ebd70e5
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 0.9996

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
  • 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://trafftec.ru/aws?utm_term=formacion+de+boca+ante+liga+de+quito PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392441/normal_5fac3e798d896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413363/normal_5f9cf9f824469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384154/normal_5f8d2b593331d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6155e517-aecd-4613-823a-90dae7e02448/82507982983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/318409f2-4042-4500-99b1-2d48c7866bcc/zoduregusop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9760d02a-2d9b-4951-8301-ed3b65893888/god_s_providence_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/cabal_online_steam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbc77bc5-4cfe-4866-ad0a-d3b314e5bcff/fruit_ninja_unblocked_at_school.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/tomikos.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/film_bloomington_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/pegoxojusogifojatab.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/79937105164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/854e6f52-d607-4c99-b2a5-7b35c3b6355a/48184366951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7090bb85-7272-408b-8df3-46d67eedc3e6/naval_correspondence_manual_memo.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/outline_notes_method.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD626 5184 bytes
SHA-256: 3aa6858fca3ba3feac5d4c4f3f6bbe06141411c09fdcb56cb143d8b1b7c12553
font_01_sfnt_off0000e791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE791 3040 bytes
SHA-256: d5a0a9eecb04fe732a37d1b608e94b1396b4f7566fa8fdcb1eac8b4b1a541757
font_02_sfnt_off0000f423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF423 11940 bytes
SHA-256: fc399f861f70ff4e806dbe7321af33cd55e8a15a1b77b37f3b78ff4606967780
font_03_sfnt_off00011b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B0B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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