Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13d61d57d685ca0…

MALICIOUS

PDF

75.5 KB Created: 2021-03-19 17:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61cd8e89303130146f0891f46413fe4f SHA-1: bbfe96954f4feb57885e8e8ac5fa86eda0f1d1ca SHA-256: a13d61d57d685ca02ae9fb879f0a4b6c6b309312865f914aec26a49db02cea7e
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of a 'download button' heuristic suggests a lure to trick the user into downloading a payload. The embedded URL `https://soxebez.ru/award?keyword=christmas+carols+booklet+pdf` is a primary indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/award?keyword=christmas+carols+booklet+pdf
    • http://tofotibuwul.sportsontheweb.net/16259930627.pdf
    • https://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/vazatukelixata.pdf
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/1185970.pdf
    • http://flowerport.store/ferrari_roma_price_in_indiazbxew.pdf
    • http://igcopyrightclient.com/730857741494hzu8.pdf
    • https://cdn.sqhk.co/xodakebebit/zBmiihh/bumpy_ride_full_hd_song.pdf
    • http://drovazvenigorod.ru/cyber_security_books_freeozklt.pdf
    • http://woziwowariv.sportsontheweb.net/37747596883.pdf
    • https://mifopezuzata.weebly.com/uploads/1/3/4/4/134484464/458c9061.pdf
    • http://atlas-copco.su/vosepikuwixazoravdl0.pdf
    • https://cdn.sqhk.co/jarebomu/dQkggaI/65125886020.pdf
    • https://cdn.sqhk.co/razanifuwuz/Kujgiaw/ireland_flag_coloring_sheet.pdf
    • http://vezerfa.xyz/what_should_a_13-month_old_be_doing0rium.pdf
    • https://kifewaremavej.weebly.com/uploads/1/3/1/6/131606874/xoforizedewolojowo.pdf
    • https://cdn.sqhk.co/dexizajifu/icgilY5/74119003246.pdf
    • https://cdn.sqhk.co/bamebuxi/hhhccjf/barogerevemopenowegare.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tigewibejageju/zufapuxesiga.pdf
    • https://s3.amazonaws.com/muvojugejoxip/93924119452.pdf
    • https://s3.amazonaws.com/toliwudalamem/jogana.pdf
    • https://s3.amazonaws.com/bevarolimesale/fipigidomefimaxuz.pdf
    • http://safedoguno.onlinewebshop.net/vexuxunebasukanotavojif.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_off0000e95d.bin
dda797c818b93ebc13b85db8efa6ddda96ce8d7d97a3758a9d4f2b763a4103bc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE95D 5504 bytes
font_01_sfnt_off0000fbdc.bin
035d6fe0194658d70a601f973ab557387a7fba940caae0be10bf9f5d99db491d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDC 10336 bytes