Malicious PDF — malware analysis report

Static analysis result for SHA-256 1588196a3be36714…

MALICIOUS

PDF

41.5 KB Created: 2021-05-20 00:49:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d88b62c0cec6c7573e96cc12a037f1ef SHA-1: 79496b95c6ef193a41b1d899b460a51aacd3b82e SHA-256: 1588196a3be36714e8bef13f384cc3500d04f9477f7008e75f5a9f91bde616e7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to redirectors, specifically targeting users with lures for game hacks and free currency. The heuristic firings confirm these links point to known malicious redirector infrastructure. The document body, though partially corrupted, contains similar lure text and URLs, reinforcing the phishing and redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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 https://netcdn.xyz/app/406889139/coin-master-spin-free-game-hack In PDF document text
    • http://vedrachemicals.ro/images/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/tiktok-free-view-quest_GM835599320.pdfIn PDF document text
    • http://vedrachemicals.ro/images/play-coin-master_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-to-get-free-coins-in-coin-master-game_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48FA 24484 bytes
SHA-256: c0134267ae72207df9fc0cd9937d9a1d4725f621ac307e51fcd052f7ba7f2016
font_01_sfnt_off00008113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8113 17884 bytes
SHA-256: f64f8d8cd546afe107dcd88d9ce91258665e3d619825ef5ba403a2abc0c27184

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