Malicious PDF — malware analysis report

Static analysis result for SHA-256 b37878b93cc52e38…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 05:53:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c95225d698d8e162775cb8d70a009c38 SHA-1: 5441ac28a2ff67956ed0980cc2d67a8cc1e11bdc SHA-256: b37878b93cc52e388e607803a661577ed7cd59a47f65756c6c34b173f24f44a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as a lure for game hacks and generators. The document body and embedded links suggest a phishing or scam attempt to direct users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/minecraft-apk-android-free-game-hack In PDF document text
    • http://ilccanada.org/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/funbloxxyz-free-robux_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33C2 27640 bytes
SHA-256: 1576f6550538f80786a58048524d42436f2b22ffd2f08ea181efc478ff61b6ea
font_01_sfnt_off000070a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A6 18228 bytes
SHA-256: 3180bee3546e15234fed753f25771b93e4d3b2f7dcb5c3070751dc9d02e0c18a

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