Malicious PDF — malware analysis report

Static analysis result for SHA-256 093ebdef5fe1cdd5…

MALICIOUS

PDF

76.9 KB Created: 2021-03-29 02:37:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 51a9f36691412c1456e791ccab6c9aab SHA-1: 52b285ee35b5146c39bbb8d330f91a9943c6aa1b SHA-256: 093ebdef5fe1cdd59249310dfe5732a9e96ff59935747a66f697b31e5018455e
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URL and other extracted URLs point to suspicious domains, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to educational content.

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://leonvi.ru/wix?keyword=reaction+mechanisms+and+rate+laws+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/loberutebe/caLiear/63460573051.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/gjchfhh/katekyo_hitman_reborn_english_dub_watch_online.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/feed_mira_grant.pdfIn PDF document text
    • http://fuxanujibiz.mygamesonline.org/17752434881.pdfIn PDF document text
    • https://cdn.sqhk.co/japewaturu/jNWhbyD/kakenulewipodap.pdfIn PDF document text
    • http://mapugukabazewu.scienceontheweb.net/melofomatusabow.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/repasoditibowibusujen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0e11d648-9241-4a11-afdd-2273ecfb6a01/42279404998.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01c0a83e-3631-4104-b790-1b71b4d38322/machiavellian_the_prince_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/091b53f4-da37-48f6-bbd1-fd206f66ab9b/the_mystery_of_aleph.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/olive_school_bolton_uniform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93366079-1d2b-48a4-8031-0f0f6c68801c/89694407523.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/epic_seven_10-_10_guide_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af571cf-20a5-4827-b68f-f13c0338516a/gumuwoxepesemebovixir.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/wuberote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/308363c3-c549-49f6-82de-8b508b923aad/68079146140.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/brinkmann_zone_grill_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61263f35-692d-454b-ae9e-f2cffec4a1b8/fijulon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0D 5132 bytes
SHA-256: f80d5721d6d8735f8592c01c6c6d260d45326f6198678cb1b224f0a28d2de0cd
font_01_sfnt_off0000ef58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF58 11308 bytes
SHA-256: a06d9a0b175842caea3873fc41bca9a24613765726d08f74fccd27a6f0c8fc10
font_02_sfnt_off0001157a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1157A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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