Malicious PDF — malware analysis report

Static analysis result for SHA-256 481c8b9317a386b6…

MALICIOUS

PDF

60.7 KB Created: 2020-11-14 03:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d7df15e2d023dc6362a59f238a4c794d SHA-1: 21d4dc95fa0432409bc4982edace060adead863e SHA-256: 481c8b9317a386b610aa621eadd397758ec0c6307ad1c107f1e37f43e33e67e5
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 0.9993

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://trafffe.ru/aws?utm_term=buku+akuntansi+keuangan+smk+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f9e3c370e480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369153/normal_5f881dd5d8cc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f9bb24da35ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450138/normal_5fac19a55c19d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5fa06b9a05ad8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_5fa4aac8074d1.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/6d6414a5-72b2-4fa4-a74a-54a5a2cfa973/rotmg_samurai_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0709a4b2-485e-4f2b-9d98-253ba0f17ccb/channing_rodd_porn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daef0a52-80b1-459d-9eac-75b3de7464fe/joladiwusafonaretemuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4697ca3-3a57-41d4-93a6-90dfac9aaf8e/72281698299.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_off0000b018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB018 5348 bytes
SHA-256: ef29910bb5475f13d6f1f7897e77eeb0fd53d4cc844d206341642488f8fd76d9
font_01_sfnt_off0000c248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC248 10416 bytes
SHA-256: 37b250111956b85383a5c654d0a609600ece0687bb92b87b609b94048f7ec138

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