Malicious PDF — malware analysis report

Static analysis result for SHA-256 c590f7c96abdbff8…

MALICIOUS

PDF

78.4 KB Created: 2021-03-13 19:31:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ee93005b489340be6918a9bc099f504 SHA-1: 9282d63fdc248e1a29250a4bc11d8f2a4c194321 SHA-256: c590f7c96abdbff89d285bc3f8b840ffc28c255af27eab9e9e52b8dc11a469f9
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, including one that appears to be a search query for 'Vulcan ship names', suggesting a lure to a phishing or malware distribution site. The presence of PDF-specific heuristics further supports its malicious nature.

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://nipisod.ru/wix?keyword=vulcan+ship+names
    • http://noksipals.online/petikimopibajowige9sz8z.pdf
    • http://lifelalulenomip.mygamesonline.org/14018739836.pdf
    • http://masalev.ru/79532993670d8tzy.pdf
    • https://cdn.sqhk.co/kagaxavog/hdHZZ9n/57900320410.pdf
    • http://csxmoney.info/whirlpool_wfc7500vw2_owners_manual7l7ch.pdf
    • https://cdn.sqhk.co/dojopaxitovi/nLhdggy/free_cubes_for_blockman_go_generator.pdf
    • http://belkwigs.com/vopirupilelugb2uaz.pdf
    • http://fewudutizoxom.medianewsonline.com/life_and_teaching_of_the_masters_of_the_far_east_reddit.pdf
    • https://static.s123-cdn-static.com/uploads/4501231/normal_5ffb3c83b2b84.pdf
    • https://cdn-cms.f-static.net/uploads/4408594/normal_6028f0529dd26.pdf
    • https://cdn.sqhk.co/sixepatexup/dihVfij/wepafumurixa.pdf
    • https://cdn.sqhk.co/dujovibipu/fKjhgg3/dream_island_codes_halloween.pdf
    • https://cdn-cms.f-static.net/uploads/4488555/normal_60263d98c5374.pdf
    • http://forajadafogaxuv.medianewsonline.com/nghe_doc_truyen_khi_dong_minh_nhay_vao.pdf
    • http://fanutoragozogow.sportsontheweb.net/introductory_functional_analysis_with_applications_solution_manual.pdf
    • http://hiziryigit.online/najokugavuxezesawametlwbq.pdf
    • http://neriwor.medianewsonline.com/vigantol_bayer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bifovigavij.myartsonline.com/81831745397.pdf
    • http://batapijas.myartsonline.com/jerubab.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4b1.bin
0330ac14e2e28f72f8f0752183db88b58c15b07460ab70f5cba70ad126ab8095
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B1 5040 bytes
font_01_sfnt_off000105b9.bin
25c0731732ab89cefaa5ce425966963e82697c839b37ad317ef8279b985a5d79
pdf-font-stream PDF embedded font (sfnt) at offset 0x105B9 11380 bytes