Malicious PDF — malware analysis report

Static analysis result for SHA-256 546859270856fd3d…

MALICIOUS

PDF

84.4 KB Created: 2021-02-08 08:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d013b39d8d66e93a677ddfaf27f8f715 SHA-1: a6a237da2a165f736dd0be99a362dfe3d5599783 SHA-256: 546859270856fd3dc3f1a93e8c6ced03160c1441537fd23098544bdb705b02f6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'maypoin.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, contains references to 'Concatenate query google sheets' and 'wkhtmltopdf', suggesting a lure related to data manipulation or document generation.

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://maypoin.ru/aws?utm_term=concatenate+query+google+sheets PDF link annotation
    • http://karaulovlife.site/53559365833apljt.pdfIn PDF document text
    • https://cdn.sqhk.co/tevotapomow/ifdoHhi/mermaids_2217_n_college_ave_fayetteville_ar_72703.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450046/normal_5ff0ba9e1c982.pdfIn PDF document text
    • http://natiral.space/7520908600k99nm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465007/normal_5fe2af2de6f2d.pdfIn PDF document text
    • http://uber-global.com/2704808538363u4y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_6011229b264c1.pdfIn PDF document text
    • http://ramuwazezu.22web.org/photo_nature_hd_wallpaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476445/normal_5ffb4b9d3880a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443823/normal_6001319670e4d.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/tobojelusiwi/5710015167.pdfIn PDF document text
    • http://diwisowaf.rf.gd/bhaagamathie_full_movie_telugu.pdfIn PDF document text
    • http://dulubuli.rf.gd/compiler_design_lab_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/motixotebiwasupuneranijo.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9F 5196 bytes
SHA-256: 65d9e1c67e1eb3df2bc90ee2a6a7b9d8421455a8757af5f3ca971864b83a8206
font_01_sfnt_off00010f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F47 3720 bytes
SHA-256: a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9
font_02_sfnt_off00011aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA7 12100 bytes
SHA-256: 5e8c81a34efd3cee48059832b3794e829f59871c41dae7ea00f0c4153ffaa5e6

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