Malicious PDF — malware analysis report

Static analysis result for SHA-256 c48d9e69138756a7…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 15:22:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c0f2e88e27e2732c348a0101ecc0fd97 SHA-1: a1e8e1aec136dc423c72601c28bb3a4ab0354fb7 SHA-256: c48d9e69138756a76fa85c14c8b4174e60ed53cb2d86c4f1035fa3a0e41bfe80
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 0.9980

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 http://netcdn.tw/app/431946152/get-free-robux-2021-game-hack PDF link annotation
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-roblox-clothes-and-items_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/female-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-get-the-ninja-animation-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/robux-hacks-actually-works_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/hack-robux-wok_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3090 21896 bytes
SHA-256: 85639a179836892c778f67cbdac05804eaf4a22888b089a9084a4cbb7b03501f
font_01_sfnt_off000060db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DB 19224 bytes
SHA-256: 821bcaeb5baca65cbb25255ca6205972482cf4d6c0082e9a42268983cc7c06a1

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