Malicious PDF — malware analysis report

Static analysis result for SHA-256 6975b50bf7352b76…

MALICIOUS

PDF

40.6 KB Created: 2021-05-12 02:57:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ebaf5dfc1efb2f396d250ff617cd6fc2 SHA-1: 3181615a5fdebf70a52f5de4b95881b6279ac144 SHA-256: 6975b50bf7352b76199e97950af818482a7d7dbeb2b0d3bdd8afd4084f5b9431
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure URL is https://netcdn.xyz/app/406889139/hack-coin-master-game-download-game-hack, which is part of a chain of redirects. The document body and embedded links suggest a social engineering attempt to trick users into downloading potentially malicious content.

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/hack-coin-master-game-download-game-hack In PDF document text
    • http://heddalboring.no/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://heddalboring.no/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://heddalboring.no/images/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://heddalboring.no/images/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://heddalboring.no/images/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://heddalboring.no/images/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://heddalboring.no/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://heddalboring.no/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://heddalboring.no/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://heddalboring.no/images/robux-for-surveys_GM431946152.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
stream_003_off000045fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45FA 23648 bytes
SHA-256: 11218efa5d85e7040af882351473dd10de6c18e433a0e3b8297a4ba0f2ffb556
font_01_sfnt_off00007b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B75 18556 bytes
SHA-256: aaade648ef56f1f9167d0db62f5c53722f102658163b7711b8d17774315d1610

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