Malicious PDF — malware analysis report

Static analysis result for SHA-256 73f44737eb87867f…

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 20:37:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae1e76d14c9891de5dc5899787a76cdd SHA-1: 87bc9573a93349a095d7f32aa9194f3713d5cf99 SHA-256: 73f44737eb87867f4d2afa180e5d9a42a7ac7e22c1cedeb3f7adbf662a248b73
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to potentially malicious infrastructure, specifically targeting users interested in game hacks and generators. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded links and the nature of the lures suggest an attempt to drive users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/479516143/androeed-ru-minecraft-game-hack In PDF document text
    • http://elearnfactory.com/images/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://elearnfactory.com/images/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/wurst-18_GM479516143.pdfIn PDF document text
    • http://elearnfactory.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-game_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.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_003_off000047b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47B0 26112 bytes
SHA-256: 51aea336872492d3cfd55762400399568cbdbbb8373dda111eaa8b04ac2cbb59
font_01_sfnt_off000082d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D3 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE2 18024 bytes
SHA-256: d77f23eb406fbdbcc7d1895b5a23e167f495e6594edd92a4e1ae302dec94c325

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