Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9384a4b67bc52d…

MALICIOUS

PDF

54.7 KB Created: 2021-06-09 00:47:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8bbd3d68aadc3f88ec1411069f09b8d8 SHA-1: fb857a9e013b3f415b7db6084ff1e1d5cc5a8f8b SHA-256: ba9384a4b67bc52d075667b54dd4e0be410f7ebb3848d0c7fc19dc10ccc0752f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent external URI pointing to a URL associated with game hacks, and the document body includes a call-to-action phrase. The ML classifier also flagged this PDF as malicious with high confidence. These indicators suggest the document is designed to trick the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9649

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.tw/app/431946152/hack-for-boobs-roblox-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-deep-web_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/cool-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005722.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5722 29636 bytes
SHA-256: 8700feb999a3eee71c1c60765c3ffed6f6509c787701690c8b62bb524f430ae4
font_01_sfnt_off00009af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF0 7420 bytes
SHA-256: 0b188308ab0e7ffce9913d63d697a586f2937cafc51a771db38e3a566cd37e24
font_02_sfnt_off0000b360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB360 18344 bytes
SHA-256: 4e99f814d3f158616040b41a5ab4cad479930ddf0c1e4ff181c0741e676d0df6

Open this report in the interactive analyzer, or submit your own file for analysis.