Malicious PDF — malware analysis report

Static analysis result for SHA-256 478ddb489a72abd8…

MALICIOUS

PDF

63.9 KB Created: 2020-11-11 18:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ca5732067740ca0ad34d0a88dc49c97a SHA-1: bc94c98e7f7b5776629ba660748339554c3317c8 SHA-256: 478ddb489a72abd86505c83a6897359352190a071224b056bee605591bee111b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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://traffine.ru/strik?utm_term=train+stations+near+east+stroudsburg+pa PDF link annotation
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/1830522.pdfIn PDF document text
    • https://doxeduzawixufak.weebly.com/uploads/1/3/4/3/134383044/d94ded926471bd.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/xomekonepisesoj.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/8241557.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/19b85bed-049d-4c11-9e3e-6ca2bf172ff8/91713787886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d022a40e-6774-4b81-ae48-34aadefd7f5c/assured_marijuana_drug_test_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb45b20e-5544-4810-a53a-553a803c4244/kenmore_20222_3.3_cu_ft_top_load_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/99850572604.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/dupont_manual_high_school_ptsa.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/the_little_old_lady_who_broke_all_the_rules_review.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/59790212383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6607fbc0-5d1f-47b2-8764-e5a88284711b/41151305100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/857e9361-fc29-4ff0-91d2-fc6960243510/juarez-lincoln_high_school_staff.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fe3c6e0-8fac-4d85-b617-6e3af3a5da94/dd_form_2977_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c15e01-856c-4566-94e5-afeb72dda635/persona_4_golden_adachi_dungeon.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_off0000bbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB4 5184 bytes
SHA-256: 93107eb08cec00386b543ad165f5b0a9b2ccc884dd539dbf830428c47f31b91d
font_01_sfnt_off0000cd59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD59 10952 bytes
SHA-256: 1f853e2fbf37c34c51ce6322a5a0a3489884e551ce965dc928d4b6c803b290c3

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