Malicious PDF — malware analysis report

Static analysis result for SHA-256 78ea027dcd212048…

MALICIOUS

PDF

39.2 KB Created: 2021-05-25 07:00:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 17d50dc7f330cfd10433948c16e612c2 SHA-1: f4cfc3fea74debf512bb00ab9d206b90d6eb4f2b SHA-256: 78ea027dcd212048ddc44b4b733753408c13d014ed25ca8daa6805a33a357ebe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector associated with game hacks and free spins. The document body and heuristics indicate a lure for users to click these links, likely to download further malware or engage in fraudulent activities. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/406889139/coin-master-free-spin-codes-game-hack In PDF document text
    • http://akbidsehati-medan.ac.id/slims7/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://akbidsehati-medan.ac.id/slims7/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://akbidsehati-medan.ac.id/slims7/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://akbidsehati-medan.ac.id/slims7/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidsehati-medan.ac.id/slims7/repository/roblox-controversy_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_002_off0000329f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x329F 25996 bytes
SHA-256: 5152e19aea9eb9b568a0b84bb4a2987c3ea35688296de31f236bb3a44c27a38c
font_01_sfnt_off00006e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E41 2956 bytes
SHA-256: cc6ee08a5af07cdf809d5f718a6f4b581fc47059b13d069ac995502e41039ee4
font_02_sfnt_off00007864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7864 18060 bytes
SHA-256: 6c6954b9f81c735a5c4580de4c42457a99792272849cec4d30b191d18cdb5601

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