Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecbcfce0ea712498…

MALICIOUS

PDF

89.7 KB Created: 2021-02-20 12:30:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 23dc065ac029ccfb0d741a825baf7fba SHA-1: 092bc52b62a9000c6b9c0a28856146d7b01413ed SHA-256: ecbcfce0ea712498b5c2b9ba2f329697da73e814cb6bb177eb525c3e99f7191c
96 Risk Score

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 flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to an 'ipod classic 160gb manual', aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=ipod+classic+160gb+manual PDF link annotation
    • http://derobidav.iblogger.org/airtel_xstream_premium_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421199/normal_5fee71c147f36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403946/normal_6021c2912f525.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403674/normal_6000750b17cc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388818/normal_6009471adf607.pdfIn PDF document text
    • http://limevekobo.iblogger.org/49813016614.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/viboxikuz/donopib.pdfIn PDF document text
    • http://luwulifinuneti.epizy.com/sesuxebegodosa.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/thrive_wet_cat_food_feeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/righteous_bold_font.pdfIn PDF document text
    • http://gekavitominugi.epizy.com/elite_dangerous_fsd_engineering_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/java_para_windows_8._1_64_bits.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/abcd_2_video_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/sewigoxuwojipik.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/lobozu.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/55427326298.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000130d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x130D5 23216 bytes
SHA-256: d5ae63a705863aee469bce837b62f063c62c12228b8a3b185d96f7e4c019c4d5
font_00_sfnt_off0000f2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DF 5724 bytes
SHA-256: 88132ac6fcf0e06c3cf595aeea0f6fc18d8e14989625acc077bfd51cc1985564
font_01_sfnt_off00010642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10642 13504 bytes
SHA-256: 3802e8f9c10b33009e76a035ab2d9b886e6f111d5ad82991ee468ece88de3880

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