Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c0b92ea9c722e7…

MALICIOUS

PDF

87.0 KB Created: 2021-02-27 04:37:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7732c002debe2e8ffe2ebd30b8d86652 SHA-1: 5a139b486ec15f2a07ea745352e92b50b74953dd SHA-256: c2c0b92ea9c722e7b18a80d30f1ac748e81ae976f9be04fdc34a3c996acc81c0
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 flagged by a machine learning classifier and ClamAV as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URL pointing to a site offering a 'beats by dre wireless studio 3 review', which is a common lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jottigo.ru/award?keyword=beats+by+dre+wireless+studio+3+review PDF link annotation
    • http://towufato.mywebcommunity.org/sofekefanigudubed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459035/normal_60294193a4da5.pdfIn PDF document text
    • http://setofexperience.site/29315240569185u6.pdfIn PDF document text
    • https://cdn.sqhk.co/kiledone/ijShgje/57800057955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445324/normal_6025a080ad9f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416671/normal_602361c967ef9.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/bgjHifi/pupefopirozijumudunike.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496585/normal_5fe4053881fbd.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/bih6gg2/13159830979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_6026e452c2560.pdfIn PDF document text
    • http://marketes.pro/is_lord_of_the_rings_in_4k_on_hbo_maxm21wm.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/femileleguzukujugurut.pdfIn PDF document text
    • https://cdn.sqhk.co/vixonafom/bjaidTt/25889626404.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/90801483894.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
    • https://s3.amazonaws.com/xapota/75218594439.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/36073097787.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/maze_runner_movie_download_in_hindi_300mb.pdfIn PDF document text
    • http://winovewivigo.rf.gd/3260573708.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/metabolic_acidosis_treatment_guidelines.pdfIn PDF document text
    • http://moroxite.epizy.com/42214161755.pdfIn PDF document text
    • http://xexerekiw.rf.gd/comparative_embryology_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/zurutufogola.pdfIn 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_off00010f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F12 5204 bytes
SHA-256: c78cada6d134197aae0a3f241b2fe0344ebcee7962929ef1b22bcad5abb61fb4
font_01_sfnt_off000120e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120E6 10828 bytes
SHA-256: b9ec642fc20e37cf1423fa0f2a33351be3d2a3cdd9bb0e611a108ab09227ecb7
font_02_sfnt_off000145c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145C3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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