Malicious PDF — malware analysis report

Static analysis result for SHA-256 c76449592510d041…

MALICIOUS

PDF

49.6 KB Created: 2021-06-11 02:51:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f5dc8dbda61c05abb1b996cd18502e45 SHA-1: 6f3750554994e8b3977a6b5f3c4633b7967420f2 SHA-256: c76449592510d041cdd97ddf0b6f5eb321397507c55d3181b06955d5d037d493
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • 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://netcdn.tw/app/431946152/robux-hack-tool-no-human-verification-game-hack PDF link annotation
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/roblox-jailbreak-money-hack-2021-trke_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/hack-roblox-net-no-human-verification_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1-dps.sch.id/new/public/ckfinder/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000505d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505D 28240 bytes
SHA-256: 0d53b3db1e5b252291651cff7c5790130f34444ef7fb1a1858b4f93e79787da5
font_01_sfnt_off000090d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D1 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D79 18940 bytes
SHA-256: f3c55fa666802b57653996105a8b19a07eec9bfcf4ddce44cc263f4452a65bf4

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