Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a15d3bf86deb50…

MALICIOUS

PDF

78.1 KB Created: 2021-03-12 16:13:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d334e5577a5cce8194d2f8a6dca4316 SHA-1: b26b4391fd913eae45547e9980511db91d0cb016 SHA-256: c2a15d3bf86deb50a05d5294ef7cd5543fbda507db4e5154d678310f04c839ce
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a phishing or SEO poisoning attack. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs point to domains commonly associated with malware distribution and phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • 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://mezovuduw.ru/award?keyword=joindre+fichier+pdf+en+un+seul
    • https://belinadojo.weebly.com/uploads/1/3/1/6/131607131/wuvisete.pdf
    • http://tuwasukam.getenjoyment.net/lifawade.pdf
    • https://rosanibo.weebly.com/uploads/1/3/4/8/134873488/zegujovu.pdf
    • http://kafofal.mygamesonline.org/logitech_harmony_300_universal_remote_control.pdf
    • http://wusozupu.mypressonline.com/embodiment_theory.pdf
    • https://legunumazonum.weebly.com/uploads/1/3/4/4/134455594/mufigulas-wowuw-xejekutominofoz.pdf
    • http://xodaxedepapopox.mygamesonline.org/epidemiologia_de_la_diabetes_en_mexico_2020.pdf
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/zajutowejabusanikeku.pdf
    • https://zuzoperelalame.weebly.com/uploads/1/3/2/6/132683259/4654655.pdf
    • https://wowujagudafu.weebly.com/uploads/1/3/4/7/134751604/pukuxuzizan.pdf
    • http://goladelexugezi.sportsontheweb.net/xawibaso.pdf
    • https://mamasikixatok.weebly.com/uploads/1/3/5/9/135961158/741d5.pdf
    • https://muwegegedagus.weebly.com/uploads/1/3/0/7/130738526/jopanizixasolebi.pdf
    • https://pezevibasa.weebly.com/uploads/1/3/5/3/135306661/d7094471.pdf
    • http://jofufunobek.sportsontheweb.net/latest_gospel_praise_and_worship_songs_2020.pdf
    • http://tijudiwulewanuw.getenjoyment.net/77897886655.pdf
    • https://pazodozonevaken.weebly.com/uploads/1/3/4/6/134606284/778465.pdf
    • http://mobufuwiwid.medianewsonline.com/best_classes_diablo_3_season_22.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d552dedc-35f4-4747-9988-01cc51042868/19629535471.pdf
    • https://uploads.strikinglycdn.com/files/2d8a6ba5-ad4e-45f3-88bc-744c257e9241/18945429907.pdf
    • http://bixozebaxikapos.atwebpages.com/besobuwamosadijuzelodi.pdf
    • https://uploads.strikinglycdn.com/files/4a4e3b38-ca9d-419c-8880-6a333584eb14/82312328034.pdf
    • https://uploads.strikinglycdn.com/files/8234bac3-a9be-43d9-a9fe-a22162e0aef7/zulom.pdf
    • http://wugujub.onlinewebshop.net/why_does_my_apple_music_keep_disappearing.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f41f.bin
0cb1a77a601e4346ec8f0b80deb99814003c7a93668ed53e7f9756ac8534f844		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF41F 5024 bytes
font_01_sfnt_off00010534.bin
948ac91b6190184beaabdee0d1911617d46fa1aa09e252afdb31342caada394d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10534 12068 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.