Malicious PDF — malware analysis report

Static analysis result for SHA-256 59366752b0a47210…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 00:47:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5483524021086c22c208fc2b21291151 SHA-1: e6be5a5d635d669fecb93b5c5f42a3f4da560256 SHA-256: 59366752b0a47210a2a68d59c231272dab076c80b541d4a9ab8a9fee911a4b45
240 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and a link farm, suggesting a phishing or scam campaign. The primary lure appears to be related to game hacks and generators, aiming to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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/406889139/hack-coin-master-dzooka-game-hack In PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-new-indominios-roblox-buble-sim_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/trouver-la-partie-dun-joueur-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/robux-hacks-tay-take-off_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/roblox-cheats-for-escape-super-clowns_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/fly-hack-for-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/roblox-ps3-download-free_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/roblox-leaderboard-hack_GM431946152.pdfIn PDF document text
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/minecraft-free-education_GM479516143.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_off0000328a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328A 23488 bytes
SHA-256: 4257588e74954e80d4261273c3b26f8f618e499689acb377a6782330185d75ca
font_01_sfnt_off000066d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D3 18252 bytes
SHA-256: cb34c00e22f4fb04ecd8dba51ce5014289f907e7ee26b06f608f45da10f54c4d

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