Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5a7f26a385fbc6…

MALICIOUS

PDF

38.0 KB Created: 2021-05-21 11:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e7514e8d3fc8a10fdaef4ee5d3511388 SHA-1: 79ae98103342d8fbd6eb0f6c121e9ad1299f6c85 SHA-256: 5c5a7f26a385fbc654ec77446e4ce0a67bb41631cd32c8eb8ab5903785e4fa41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" or "free generators". The primary lure URL is https://netcdn.xyz/app/479516143/is-there-a-way-to-get-minecraft-for-free-game-hack, which is associated with malicious redirector infrastructure. The document body also contains embedded URLs pointing to other potentially malicious PDF files, suggesting a multi-stage download or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/is-there-a-way-to-get-minecraft-for-free-game-hack In PDF document text
    • http://elearnfactory.com/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://elearnfactory.com/images/coin-master-hack-2021-android_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
stream_002_off00003868.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3868 26056 bytes
SHA-256: d5f4cd78af05b6278fc9d5c61b58c31d48a5b1c974e957dd760362539aa070d3
font_01_sfnt_off000073ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73AB 18252 bytes
SHA-256: de0111ade417482c0e2229237f29b3fad1c5be4a3188252229cb4f1209180f37

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