Malicious PDF — malware analysis report

Static analysis result for SHA-256 a616a103fde4145d…

MALICIOUS

PDF

72.7 KB Created: 2020-11-10 12:12:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 64dcf5533b7e8519d30e6b77b232cc60 SHA-1: d232ede2b6b95066108f45a87761579663e34e2e SHA-256: a616a103fde4145d03ae05cca608db45f8928c3fbebbac7687547b60eaf901b2
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 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/123?keyword=volcano+worksheets+printable+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f9e3bead8829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_5fa1e9784965f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_5f8fe60c3b66c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f97008c70082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385847/normal_5f99302b56188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470035/normal_5fa6e5c5b0625.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/6a218070-21dc-461e-8179-620658e700c5/98536232243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/575e913a-257f-4836-b253-2b1dc7285c40/aristotle_nicomachean_ethics_terence_irwin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8cc913e-4208-4241-804a-244330964266/46130655187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/446f0684-3d11-446b-82fa-f1d050d52ff2/betaterategulanubajogemu.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
    • 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_off0000c53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC53A 5364 bytes
SHA-256: 104a462173bbe12ba540b0e219b446bec14d8fcbb09a609f7309b2f135b88f9d
font_01_sfnt_off0000d789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD789 10540 bytes
SHA-256: 559ba3106f25ef3697cdd69048c74bbc930cb16676fa9d5fbee7bf803de81a22
font_02_sfnt_off0000fbbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBE 17496 bytes
SHA-256: a3c8341dbce3fe4df124032849522427f7cd10c6b6a6fcb9feca4fb10e6c5558

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