Malicious PDF — malware analysis report

Static analysis result for SHA-256 93277f8bc306b75f…

MALICIOUS

PDF

74.0 KB Created: 2021-01-24 08:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 61645133e4716ba12a3b78e79d1af448 SHA-1: 15232f7b659183db93638bff9e8fb9dc9b122921 SHA-256: 93277f8bc306b75f9ef19ba2210916aa70b17aa2da8d9cfd7ed85afe0b49adeb
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a known malicious redirector, which is likely intended to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, contains text related to "Steins gate 0 true ending explained", suggesting a lure to entice users to click the malicious link.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/123?utm_term=steins+gate+0+true+ending+explained In PDF document text
    • https://static.s123-cdn-static.com/uploads/4451762/normal_5fe4a622826b8.pdfIn PDF document text
    • https://site-1174819.mozfiles.com/files/1174819/37185376616.pdfIn PDF document text
    • https://cdn.sqhk.co/kujusiru/lhdjxYF/summer_nails_2020_blue.pdfIn PDF document text
    • https://site-1178386.mozfiles.com/files/1178386/pexiwewedozas.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/KTijih3/39103904865.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457014/normal_5ff298ebe592d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453327/normal_5ffbfd72c1228.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/jgjeNgj/zibadudum.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/jc7iaW6/xavademaxedixodi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366401/normal_5ff26d44470c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501042/normal_6008839084352.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475582/normal_5ff0d5a8d8229.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/kovozenamofox/metformin_and_alcohol_forum.pdfIn PDF document text
    • http://bofiragomux.rf.gd/easy_electric_guitar_sheet_music.pdfIn PDF document text
    • http://bikutuvuxaxixo.epizy.com/silica_gel_desiccant_msds_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/satupideb.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/ponivomepi.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/gezebiwogakudakopaxavu.pdfIn PDF document text
    • http://masusekokuberex.rf.gd/layzie_bone_lost_and_found_free.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_off0000e459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE459 5440 bytes
SHA-256: f5590827866b78576db67e3a6f187472895e36fa58a43937f17a225731c652be
font_01_sfnt_off0000f6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DC 10500 bytes
SHA-256: f11b8f66e922ec1942ab7a93cb480f250014524860ffd8164085cf4dd0e585f3

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