Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca603e280446c39…

MALICIOUS

PDF

82.6 KB Created: 2021-03-24 01:22:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9cae715a47b481b1c256d583a83357c7 SHA-1: c0d8efb066286c8bac7ae38a9a7e4908d68154c0 SHA-256: 4ca603e280446c39ac134029f58f27f631a55b38fb3ea9a8611d4d0b11393597
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://kuzutuzo.ru/wix?keyword=visual+basic+for+applications+excel+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369315/normal_5ff6590f7de33.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/8Pviijd/oscar_wilde_nyc_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/inhiIA4/foboganulamipanifosiko.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/ccMGrK8/logufevabavunafomezog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445101/normal_604116ffe8d1f.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/hhByVXe/mentorbox_review_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/hnwhdig/54465434136.pdfIn PDF document text
    • https://cdn.sqhk.co/lomotutuwe/ijoicjb/how_do_you_play_go_fish_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/qDOgenz/lewokilopogegawerekesan.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/jajixgd/92523898186.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/8mgiESF/sipol.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/KjhgXic/wuduvukodekarabujat.pdfIn PDF document text
    • https://cdn.sqhk.co/fakozunada/iiXjhii/hearts_on_fire_song.pdfIn PDF document text
    • https://cdn.sqhk.co/bokapapukopa/cn81gd8/army_bomb_wallpaper_bts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0112313d-28d2-42c1-9a56-76e3be474964/63356589170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5107a81-2af5-4304-ba12-dbe9beeaee1f/65411846351.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/yaesu_vx_170_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/xovufugabulevawuwir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c12c373-0984-472d-a93a-248a641dc32b/36279051196.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/1807333211.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C9 5324 bytes
SHA-256: 953e4f69e926b355fe11e016a1cf034de76c37adef5185f20f7f72553906e0fa
font_01_sfnt_off000108f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F2 22224 bytes
SHA-256: ea1d11b49192863851cc4a48f45a36b74bbb68caf5972fa88a70c6fdb983a354

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