Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a27f74cba06673a…

MALICIOUS

PDF

80.4 KB Created: 2021-03-10 16:37:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33a1bfba4b35b6d60638e7d14942baf1 SHA-1: b9b58088d47ef5a18c539b47a6784a7c6764dc39 SHA-256: 8a27f74cba06673ab9b6b0609151aca15e54f4cea924923aa8286be0f096c649
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains a URL that appears to be a lure for "Dragon city hacks for gems". This URL is the primary indicator of a phishing or scam attempt, likely designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=dragon+city+hacks+for+gems
    • https://cdn.sqhk.co/zoxinugokas/hjiBMjW/art_therapy_study_online.pdf
    • https://static.s123-cdn-static.com/uploads/4459320/normal_60001602c2235.pdf
    • https://cdn.sqhk.co/vanewano/5BigPMJ/weather_forecast_los_angeles_december_2019.pdf
    • https://delidanazej.weebly.com/uploads/1/3/2/6/132681463/sozena.pdf
    • http://bonifacy.site/sodapasixorebebijoxifetisa68kc.pdf
    • https://cdn-cms.f-static.net/uploads/4426422/normal_600e21959dca2.pdf
    • https://wuzipagaxu.weebly.com/uploads/1/3/0/7/130776492/8d285519860.pdf
    • https://cdn-cms.f-static.net/uploads/4419211/normal_6044007e29633.pdf
    • https://cdn.sqhk.co/biwizalibe/jhigFhd/pilot_pens_g2._38.pdf
    • http://resimpub.com/wogevuvayrxyp.pdf
    • https://cdn.sqhk.co/nulaliki/djg35gh/dog_doing_bright_yellow_poop.pdf
    • https://cdn.sqhk.co/fojilude/bha8ihc/99103905159.pdf
    • http://reduslim-italy.site/bikozokufedemaxujcpzsu.pdf
    • https://cdn-cms.f-static.net/uploads/4382619/normal_602d6b8ef06a6.pdf
    • http://hustlinmoney.com/bn_gi_thin_kip_ca_ti_truyn_chbvqp7.pdf
    • https://static.s123-cdn-static.com/uploads/4366366/normal_5fed985f78656.pdf
    • http://mgacessoria.online/vekorotuzazehhcho.pdf
    • https://static.s123-cdn-static.com/uploads/4403824/normal_6001ffb29fc0d.pdf
    • https://kesetemokeze.weebly.com/uploads/1/3/2/6/132682820/5787824.pdf
    • https://cdn-cms.f-static.net/uploads/4422144/normal_6024476b22d40.pdf
    • https://static.s123-cdn-static.com/uploads/4460950/normal_5fde328e9d97b.pdf
    • https://cdn-cms.f-static.net/uploads/4418167/normal_6036dd8b21a3a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fofeguj/vuxatiruvudiropo.pdf
    • https://s3.amazonaws.com/tasufagijaremo/8518468903.pdf
    • https://s3.amazonaws.com/loneminovu/8606377142.pdf
    • https://s3.amazonaws.com/wutezigojuxi/91756892024.pdf
    • https://s3.amazonaws.com/bulolimepol/oral_radiology_principles_and_interpretation_7th_edition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f24d.bin
8002d24a37dfc077ed14a1331bbd2be8bbdb4a280c37962f51afd604385d984b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF24D 5428 bytes
font_01_sfnt_off000104a8.bin
7ddc4e307ecc0208bb7576d9e4c1fa8d5068fa2851890f59e8d1292bb341344c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104A8 2468 bytes
font_02_sfnt_off00010fd9.bin
16996ba67575b28be04886cd70861ac8a91873df5b8b23322c356af8dae30894		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD9 11276 bytes

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