Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc698d4fda2b27d2…

MALICIOUS

PDF

43.1 KB Created: 2021-05-17 12:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 7601af1dcf14e67b6f57df003080750c SHA-1: 0edfccd5b36b56541068121386aff640b5604bb9 SHA-256: fc698d4fda2b27d2c15b68da9ea8a42995d91fba1ee4f67ddde082626f49c444
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs reinforce this theme, aiming to trick users into visiting potentially harmful sites. While no scripts were extracted, the presence of malicious links and the ML classifier's high confidence indicate a strong likelihood of malicious intent, likely to download a second-stage payload.

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-free-robux-hack-game-hack In PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_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
font_00_sfnt_off00004b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B73 24828 bytes
SHA-256: 5f97b80e05d9aef38798563eb47beb9f00f04a48172b44bfc00cf62f540c25ef
font_01_sfnt_off000084b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B8 18680 bytes
SHA-256: 94830d128a2a842b7d907871b5b30233810e9b8beb569ce3f786f2ddb63eaed4

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