Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab8a8f09a90c8a4…

MALICIOUS

PDF

73.4 KB Created: 2021-01-27 23:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9b0bcb16f76bd222a6e50257491133a6 SHA-1: d011c6b6fe6d560dfeaebc5132c42eefcdf188ff SHA-256: bab8a8f09a90c8a4f00a7a76c1d644ad533ddc8d752fc90f6fdf3ced12c56ff1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, contains text that could be interpreted as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/123?utm_term=watch+polaroid+online+free+2017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490272/normal_5fda5acfbac3f.pdfIn PDF document text
    • http://idealica-italiaoficial.site/speech_bubble_icon_png_vectorutl54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483082/normal_5ffe97e7932ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500453/normal_5fd1957578b91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393759/normal_5fc6d49fbe53e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_600ed0aed59e0.pdfIn PDF document text
    • http://igme.site/linux_mint_android_sdk_pathapd9s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426550/normal_5fc8a7f51cba0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488323/normal_5fd90b0784cb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392472/normal_5febc589b48b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411493/normal_5fd99ea62b183.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494668/normal_60013d82708b2.pdfIn PDF document text
    • http://idslim-italia.site/rivofiluzibusm3cl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417818/normal_600c364ba78b8.pdfIn PDF document text
    • http://physcoo.com/1001_games_to_play_listdxqzu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46F 5272 bytes
SHA-256: b8860a0e140ab4963907bb0e7a2ba9f2c1f26ff276afb219921531b4d013bd45
font_01_sfnt_off0000e65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65F 10484 bytes
SHA-256: e8aed821ea7f726d673daa75472b0428cf6b70059683f36e486670fcc1365a19
font_02_sfnt_off00010a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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