Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab23341efb861a84…

MALICIOUS

PDF

79.2 KB Created: 2021-05-18 09:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 812936d58792ab22f16ee5dbb304cb78 SHA-1: 6809c0a57ccf336c4c18a46d7e41a2ab13001f0a SHA-256: ab23341efb861a847ac2a57b0162bdbaba9d807751c14105c9a2524c895c7ad4
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The embedded URL `https://xezojetit.ru/strik?utm_term=maplestory+offline+private+server+download` suggests a lure to download a payload disguised as a game server download. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xezojetit.ru/strik?utm_term=maplestory+offline+private+server+download
    • http://vasezasu.22web.org/27190303260.pdf
    • http://gusanod.22web.org/vabuvekizekajazep.pdf
    • http://josuwuwopow.22web.org/best_strongman_program_for_beginners.pdf
    • https://cdn-cms.f-static.net/uploads/4495265/normal_5fd7a6649eb5b.pdf
    • https://menufepu.weebly.com/uploads/1/3/1/1/131163725/f25faca8b32d07.pdf
    • https://cdn-cms.f-static.net/uploads/4403947/normal_605bb91369976.pdf
    • https://cdn-cms.f-static.net/uploads/4484805/normal_603bf4d1dab87.pdf
    • http://zejenaxudemato.22web.org/xepusewume.pdf
    • https://cdn-cms.f-static.net/uploads/4371508/normal_605b57132f939.pdf
    • https://cdn-cms.f-static.net/uploads/4371799/normal_6060959381b19.pdf
    • https://tekigeja.weebly.com/uploads/1/3/1/3/131384442/loradugofevoxebefu.pdf
    • http://sibobovogulumu.22web.org/digitech_fs3x_footswitch_compatibility.pdf
    • http://jafepakapexi.22web.org/58435516919.pdf
    • https://polalakenasi.weebly.com/uploads/1/3/0/8/130813885/pudigugetejagaz.pdf
    • http://tonipoj.iblogger.org/38951008320.pdf
    • https://lejalebenepuk.weebly.com/uploads/1/3/0/7/130776022/wiloxo-vimabipito-wodibupowo-pesubudak.pdf
    • https://static.s123-cdn-static.com/uploads/4388420/normal_5ff194eb5d181.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dexodekelaseki/2gig_go_control_battery.pdf
    • https://s3.amazonaws.com/zolerazowubow/air_pollution_project_work.pdf
    • https://s3.amazonaws.com/tupofelasujewas/palakapovem.pdf
    • https://s3.amazonaws.com/baxadelefofibuz/27684002260.pdf
    • https://s3.amazonaws.com/wovedukevikov/91039960354.pdf
    • http://residarifuwus.rf.gd/55248225495.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_off0000f587.bin
670ad3d7a8da7b3b3a60572232e74f2e2c205ea1dccaa2d23fea65441791f13a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF587 5296 bytes
font_01_sfnt_off000107bf.bin
dd807478e329a3e979c04f64e8e74e6e61b07615d9f82f7ab766b770e8a30640
pdf-font-stream PDF embedded font (sfnt) at offset 0x107BF 11640 bytes