Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e25247e8e7dd869…

MALICIOUS

PDF

68.9 KB Created: 2021-01-10 07:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b5cae2ecd5edd954c6143aa10ce92d2c SHA-1: 9fefe73f5408b0cba9b1561d49a0062893e1a421 SHA-256: 4e25247e8e7dd8696fa1f74ce476f0dc35e13aa685ef31757370ee171b1e0136
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with the primary one being `https://traffnew.ru/aws?utm_term=2020+camry+hybrid+android+auto`, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://traffnew.ru/aws?utm_term=2020+camry+hybrid+android+auto PDF link annotation
    • https://rugezanuw.weebly.com/uploads/1/3/1/4/131483337/bipililivawisepi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5fd379fa8c8e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470552/normal_5fe40140eadbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456699/normal_5fae21edb74cd.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/hfXijgd/96492269229.pdfIn PDF document text
    • https://lajutiruwogow.weebly.com/uploads/1/3/4/5/134585316/munob-refolokaruv-xabiwuvufibub-dujasojalimel.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/giEjbsN/lotofibufe.pdfIn PDF document text
    • https://zatitudebijozi.weebly.com/uploads/1/3/4/4/134460539/dae33ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sezewu/sotaxetivotavigivasefine.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_off0000d050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD050 5388 bytes
SHA-256: 6b0ec1d2471ca49e2457d1b7f5b025d8f35be982d9fdd2b2be5f0038a5d7b57e
font_01_sfnt_off0000e275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE275 10764 bytes
SHA-256: 60f8a3b5920cda86972bbd916e326637a18ca85bf706c3896f901c8d1c18112d

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