Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1a44ca621eeac0…

MALICIOUS

PDF

81.4 KB Created: 2021-02-15 11:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0515e92ad0c030ae65152f3a7017fb80 SHA-1: 2d0ef0bd25f6afd93ae159024e184acb0005833e SHA-256: 9f1a44ca621eeac09a1cfa4a2751a1c94899c903814327053c134bb17266e346
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/wix?keyword=i%2527ll+bring+the+beer+hat PDF link annotation
    • https://febefadu.weebly.com/uploads/1/3/1/4/131453100/tojezepodegofoj_xalewebupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373522/normal_6029e139857e4.pdfIn PDF document text
    • https://pudexaxetodeli.weebly.com/uploads/1/3/2/6/132683251/jelaruma-dezobazoselos-kajivesadatakib-mababuj.pdfIn PDF document text
    • http://theharaka.online/nigoruwezapebobafl0av.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487888/normal_5fecec1221e2c.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/dgdzCid/killer_sudoku_online_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/fekurisakez/jcWJ30k/spirit_airlines_baggage_fees.pdfIn PDF document text
    • http://prizinsta.info/amar_ujala_epaper_downloadmjx5w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_6025c7c4b3fc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382772/normal_5fe6ea1a1bf16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_600eaef367307.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxinugokas/YHifyia/aarp_games_mahjongg_remix.pdfIn PDF document text
    • https://sinekagu.weebly.com/uploads/1/3/4/8/134855021/5490555.pdfIn PDF document text
    • https://cdn.sqhk.co/domuduxuro/jdhdRhf/download_game_farm_story_2_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/gcJjegg/recorder_notes_b_a_g_hot_cross_buns.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500878/normal_5ffa69d613fda.pdfIn PDF document text
    • https://xawavefite.weebly.com/uploads/1/3/4/6/134667803/8529014.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/sirilagewuga/9607986994.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/dead_space_3_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/bafusidubuw.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/kepirajos.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB70 4880 bytes
SHA-256: e50783e16145a105cef81762a18af8061acb27eb69313666c107290f1514d27a
font_01_sfnt_off0000fc06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC06 11128 bytes
SHA-256: 29f546500c6b3d96be3fae4435477497a235933c3220a9236e0f414fbff2d561
font_02_sfnt_off00012256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12256 16168 bytes
SHA-256: 208743bdf3cc7a8a57817f7ac27e1b4abf7f4d36f593c9986615c5a5543e6963