Malicious PDF — malware analysis report

Static analysis result for SHA-256 1470b327cbef8737…

MALICIOUS

PDF

32.7 KB Created: 2021-07-06 11:31:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a41428ae051e744c756b7ffb04cf38ec SHA-1: 6be8c4e30291f7b896b3be333f0324233bbb2965 SHA-256: 1470b327cbef87372c4e99ca505878da840653696274753c63a69ce6dc3e135d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting game hacks and free currency lures. The heuristic firings indicate that the PDF links to known malicious redirectors and is flagged by an ML classifier as malicious. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/roblox-sexually-game-hack In PDF document text
    • http://opac.library.uib.ac.id/repository/free-robux-offer-sites_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-get-stuff-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/wm-productions-hq-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-hack-robux-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-get-free-robux-2021-feb_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/village-4-coin-master_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_off00002c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C93 21364 bytes
SHA-256: 81a4f277b1b52b336d0f05ad1a8fe7bb348eec9f53574f91a3212e432132cb25
font_01_sfnt_off00005b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B65 18804 bytes
SHA-256: ac65bc2350733491bf8b1f5a6175b8e6669ededf8897379c42ae9d533bb69578

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