Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe18bd4813e6e29…

MALICIOUS

PDF

42.6 KB Created: 2021-05-10 23:39:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 40f0234cac8b8d7e050e35b92182365f SHA-1: e61cb82b936d636e894b841a4d960a218a2b7424 SHA-256: 7fe18bd4813e6e2949adba834ff4d86131b1d706940883f43577e53015b33d2e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external URLs, including a primary link to 'netcdn.xyz' which is flagged as a malicious redirector and associated with game hacks. The document body and embedded links suggest a lure for obtaining virtual currency or game advantages, a common tactic for phishing or scam operations. The presence of multiple redirector links indicates a high likelihood of malicious intent, potentially leading to malware downloads or credential harvesting.

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/431946152/how-to-get-roblox-premium-for-free-game-hack In PDF document text
    • http://www.imwd.it/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://www.imwd.it/images/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.imwd.it/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.imwd.it/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://www.imwd.it/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.imwd.it/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.imwd.it/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.imwd.it/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://www.imwd.it/images/real-robux_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.imwd.it/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://www.imwd.it/images/body-roblox_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://www.imwd.it/images/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://www.imwd.it/images/master-coins-free_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
stream_003_off00004743.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4743 26508 bytes
SHA-256: 7a2db23bfe73e0c1bd9ba70cb55f3bc4f87874bec5452ef56149624494f5e8b9
font_01_sfnt_off000082a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A1 18888 bytes
SHA-256: 80296d3e833823be7f1e21571c517a003a5ed5633da55eadbe5c2ecc0576c034

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