Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1445f9bc7f315f…

MALICIOUS

PDF

78.0 KB Created: 2020-11-14 03:45:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 14a2a8f4485c44470258cb375f7d3e67 SHA-1: dd61c480119427491d1157afa20b6aaaeb8b9f73 SHA-256: 1a1445f9bc7f315fbffcaf396ebf91dece11882bb333ec9b9c39a733a4b95406
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://traffset.ru/123?utm_term=weber+legitimacy+and+authority PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5f9dbb043a20d.pdfIn PDF document text
    • https://pinoxelu.weebly.com/uploads/1/3/4/1/134108818/a535e1ef10a.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdfIn PDF document text
    • https://dalofixaf.weebly.com/uploads/1/3/4/2/134234602/15557025352490.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_5f8a0505bc3de.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/317bc7738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_5f9c0a8f3a3d8.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/c5eaa044-951f-49b2-95a4-f683877b55ac/11988742814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3599040b-4cf3-4172-954b-1577b4e7ef06/double_entry_bookkeeping_class_11_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43083809-adf1-4d62-9a7e-fbbd5add7743/world_hd_movies_free_online_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a158b1e-3913-4136-bcbf-87d4083b760d/higbee_thread_start.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10265f04-6fc6-472f-9225-5d8000575464/raxareserurimor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17eac7e9-a512-4926-ab0c-0964f3f86519/satomig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdd6d645-34ed-444d-8228-97285a0734ea/93086432900.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_off0000f524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 5432 bytes
SHA-256: 0c696c0a29d198a404a98a6cccee098ded4c4eed3476ac4e4fd054dabc04dafc
font_01_sfnt_off0001077e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077E 10440 bytes
SHA-256: 68b3a64ad03ad7e96f592fc09af3a9bebbbcef40725221f13e3f7d9ded8c20f4

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