Malicious PDF — malware analysis report

Static analysis result for SHA-256 43c658e7b10edf6b…

MALICIOUS

PDF

37.7 KB Created: 2021-05-22 20:03:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eabd742cebaa4ab269cb43bd03f1693d SHA-1: da053da7e62668384667a531392c81aeb3b5265b SHA-256: 43c658e7b10edf6bfeecdbe772a84760b912c7c6c9d4efea6eb0a44e0b2e6531
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a 'free generator' or 'game hack' lure, indicating a social engineering attempt to trick users into downloading further content. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were directly extracted, the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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-link-game-hack In PDF document text
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://belajar.mtsn4malang.sch.id/__statics/gudangsoal/files/to-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000030ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30CE 25004 bytes
SHA-256: 42e55d1a8e67258b5b8a0531feba4706d05d6b8346520a72b90c3a4e777ae727
font_01_sfnt_off00006981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6981 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00007324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7324 17880 bytes
SHA-256: 5ce88b684446e36e89a0643934549b22fce1d776877bbe9d9a558feafde7429d

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