Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8e86d346860da6…

MALICIOUS

PDF

105.0 KB Created: 2021-03-20 23:11:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a810314cee554a8a0d4c14141f60ed15 SHA-1: 1b46e4aefb3441359b6212ed5af18be5813fcfa2 SHA-256: aa8e86d346860da6f5135713fb4090585dd781ee78787266ee049eacb529890b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of multiple suspicious URLs suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9896

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://zajinet.ru/award?keyword=le+verbe+faire+pdf
    • http://idealica-ufficiale.site/junovoj5nxzz.pdf
    • https://static.s123-cdn-static.com/uploads/4410216/normal_5fc7ca8149197.pdf
    • http://taher-tcac.com/duwabosixegumemuqzz.pdf
    • http://ru-payment.casa/32095808968f8gpc.pdf
    • https://cdn-cms.f-static.net/uploads/4385197/normal_6024820a15432.pdf
    • https://pivatebovuwize.weebly.com/uploads/1/3/0/7/130775292/9152048.pdf
    • https://cdn-cms.f-static.net/uploads/4369648/normal_604dac6de7aa4.pdf
    • https://cdn-cms.f-static.net/uploads/4455377/normal_60519739a319d.pdf
    • http://sunshop.pro/95192796855z289w.pdf
    • http://ulekschool.online/27582584146fx15d.pdf
    • https://lokevevivepino.weebly.com/uploads/1/3/4/1/134131736/6a23ef76d7b.pdf
    • https://pinagoremomaj.weebly.com/uploads/1/3/0/7/130738806/jalesosukaporuv-revat-jatimizivo.pdf
    • http://umdtheatre.ru/jakisonupedunedimedokb25y.pdf
    • https://static.s123-cdn-static.com/uploads/4386363/normal_5fcff4124c1ad.pdf
    • http://pestore.pro/67904716075jxugz.pdf
    • https://cdn-cms.f-static.net/uploads/4494681/normal_603eec9ce8007.pdf
    • http://huseyincanx.com/the_human_brain_book_downloadcmupe.pdf
    • http://sport-stavki.fun/fogely70zd.pdf
    • https://deserekinubolid.weebly.com/uploads/1/3/4/3/134319780/6684747.pdf
    • http://avto-document.site/lg_front_load_washing_machine_drain_hose_installation6ybqp.pdf
    • https://cdn-cms.f-static.net/uploads/4465930/normal_603f2fd794c08.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fcd8f2da-993b-4c86-b451-af5442199954/76485725337.pdf
    • https://uploads.strikinglycdn.com/files/8967111f-3f4e-447f-b63e-fda045ebedb1/43428275915.pdf
    • https://uploads.strikinglycdn.com/files/1f9cb510-23b3-4be1-968f-f9034bec36f5/bujesobijuvire.pdf
    • https://uploads.strikinglycdn.com/files/b907c34a-e0f5-49e3-b9a3-f9a3e63b3411/craftsman_18_chainsaw_parts_list.pdf
    • https://uploads.strikinglycdn.com/files/5fc2c964-515a-4250-9134-2233c3ab8f5f/dopafilelivon.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001351e.bin
082c89522e4251f0a814862fddf633b1dac669eb780a02580130c1f52bfffe84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1351E 3312 bytes
font_01_sfnt_off000140ff.bin
dd8392a4a1772892cdc949c6be0bf09e4a2a596ec41663af13ef9ec41b0f707b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140FF 4964 bytes
font_02_sfnt_off000151f6.bin
8246e8803512ae95c22b793ff174dad3f9c99fc77a0c7aa81e2ebfd5ee725b97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151F6 13936 bytes
font_03_sfnt_off00017cc3.bin
856321f85aaf40189af87781899ddef36f7c1b8db8ee194d11a96073965390be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17CC3 16736 bytes

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