Malicious PDF — malware analysis report

Static analysis result for SHA-256 e28595d8565de3f1…

MALICIOUS

PDF

40.8 KB Created: 2021-05-13 14:14:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6d2bb5500e6c1b832d7ad679abbf0325 SHA-1: a45e819aa21fb96d825a2bd8ba0d561bd4389351 SHA-256: e28595d8565de3f1fc7ed961548e20ff1cea95b87fde6f234eba67d73f0a39c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game resources, a common social engineering tactic. The embedded URLs, such as 'https://netcdn.xyz/app/406889139/coin-master-free-spins-today-new-game-hack', are designed to lead victims to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8902

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-spins-today-new-game-hack In PDF document text
    • http://aljazeera-me.com/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://aljazeera-me.com/images/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://aljazeera-me.com/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://aljazeera-me.com/images/free-spins-coin-master-without-survey_GM406889139.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_003_off0000393d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x393D 25044 bytes
SHA-256: 4f69d9e696450f71c4ef68bf75b76c63736cab2e655ee57c9f2186fdb49b4ab7
font_01_sfnt_off00007251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7251 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00007d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D54 18404 bytes
SHA-256: 18e77bbf6fe8462b755cd6d2d41f5b898be86405eb57ffa87df3bebfe1b33752

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