Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0747d98b5d1552a…

MALICIOUS

PDF

44.9 KB Created: 2021-05-19 10:03:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 6b6f64f8c3a29cfaa09537c0c65082a1 SHA-1: e1d996cb53f7b3e6bd6b26917bdf4750ec9b6234 SHA-256: d0747d98b5d1552aa46c8af7ae208aa2985602e09b3986276d4d4839cea83e33
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, promising free in-game currency or hacks for popular games like Coin Master and Roblox. It contains multiple embedded URLs that lead to redirector infrastructure, ultimately pointing to pages designed to trick users into further engagement or potentially downloading additional malware. The document body and heuristics strongly indicate a phishing or scam attempt leveraging social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-hacks-no-human-verification-game-hack In PDF document text
    • https://pneukalousek.cz/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/10-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-free-spin-and-coin-link-today_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_003_off000048c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C4 26064 bytes
SHA-256: 877f8875a9722352bb5583fa3111e47727aef9903e99e3ea256c0f677efd93b9
font_01_sfnt_off00008386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8386 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D27 18248 bytes
SHA-256: b53d611e96a32094425b068729023046bb1db9f19d10500fe1599e8fd30759af

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