Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f09051349ae434c…

MALICIOUS

PDF

66.5 KB Created: 2021-03-05 04:10:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2beb6b8c34f80fa282680d5e8f4a56a9 SHA-1: 59d8cdc08d0989c9794095c308c5080bea6115e8 SHA-256: 8f09051349ae434c3a3b9ebed1a46e174a3c89e95bfd020b2af0038c626bc175
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/wix?keyword=virtual+blood+typing+lab+worksheet+answer+key PDF link annotation
    • http://verifybadgehelp.com/scanner_radio_fire_and_police_scanner_appgkaio.pdfIn PDF document text
    • https://suxutusebosogu.weebly.com/uploads/1/3/1/3/131379987/powuguxibupad.pdfIn PDF document text
    • http://ryukzak.digital/muvozabibilomad6zmwi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456135/normal_6037becf8c2c8.pdfIn PDF document text
    • http://centerverifybadge.com/download_drake_pop_style_mp3ehhaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470040/normal_5fcfa01a5e188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414679/normal_601afcb701afd.pdfIn PDF document text
    • http://buybritishcat.com/boatswain_mate_manual_answers4n0bg.pdfIn PDF document text
    • https://sovufejado.weebly.com/uploads/1/3/0/7/130740048/7d7e623f.pdfIn PDF document text
    • http://idealica-italiaofficial.site/hide_caller_id_android_6m97w2.pdfIn PDF document text
    • https://vevatujiv.weebly.com/uploads/1/3/1/4/131482893/03133a3ea5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366965/normal_6002998c2897d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382965/normal_602739a630455.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383571/normal_5fc978ec4d03e.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/11ff2cf0-adee-4d00-b618-4447c3a56a2f/le_mythe_de_sisyphe_summary.pdfIn PDF document text
    • https://d6236f05-450e-4b96-9875-1783d83c708b.filesusr.com/ugd/912de2_03ceada82fc44735a3481f4f6ab82044.pdf?index=trueIn PDF document text
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_e2a2437b6fc84f278d996edc4e3e0559.pdf?index=trueIn PDF document text
    • https://0e67983c-e844-40c9-b604-97311ec94efe.filesusr.com/ugd/6e13d9_dd448b4574bc490c808205125dd781c9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/69fd9e8f-91e1-48d0-a042-75696f700bbb/68279455136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56941a32-3436-4abd-b004-ccfd0960df62/32909822343.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC685 5584 bytes
SHA-256: d24518faca4c41c36452c5857e29a72ca52d8315d80884c12050df38d04e4658
font_01_sfnt_off0000d98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98F 10104 bytes
SHA-256: 16231b11dea5f28a2ed8f219bd9e0369d156602beafc75ea8c58df220b3ee38a

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