Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe8300053f05618…

MALICIOUS

PDF

82.5 KB Created: 2021-02-11 08:12:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 35c2582ecfcbd6726f5b93ed4463d512 SHA-1: 4d80c89dbb64a5db5e39593412c52ee1b4c95444 SHA-256: ebe8300053f05618b59a25e957397b18e17b48fe55cb3ec7f1db76909c1d5084
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to a 'Blink camera manual', likely intended to trick the user into clicking the malicious link. No scripts were extracted, but the presence of the malicious URI is a strong indicator of a phishing attempt.

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://jacksth.ru/aws?utm_term=blink+camera+manual PDF link annotation
    • https://cdn.sqhk.co/rozopebak/hgiggdA/remojelelefu.pdfIn PDF document text
    • http://giocodigital.fun/eclipse_avn110mrc_user_manualwpjdt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414161/normal_5ff0c370af2dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427793/normal_5fceac36131c1.pdfIn PDF document text
    • http://reduslim-ufficialesito.site/96795417222dzde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501214/normal_5fe772978f6e8.pdfIn PDF document text
    • http://tuvuvadirozo.iblogger.org/bapusolupajakepuvib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5fe139886c3b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://varoniwarovez.rf.gd/45012669926.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/principales_bacterias_patogenas.pdfIn PDF document text
    • http://mulozeraxepe.epizy.com/senadatazidameb.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/answers_to_wheels_in_motion_defensive_driving.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/hd_movies_2018_hollywood.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/lopotadugiwazufobijezuneg.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_off000107ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EE 4880 bytes
SHA-256: 7f8782a31a587976f89873fc7c438518063387a6ecd609660b1c46ac49674705
font_01_sfnt_off00011873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11873 10756 bytes
SHA-256: 43c69c770578ffb7abd6806ab8c523cd6b0a0e3e2790806f04cbdfed23309999

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