Malicious PDF — malware analysis report

Static analysis result for SHA-256 882d49d8e0dc7a02…

MALICIOUS

PDF

46.1 KB Created: 2021-05-10 17:01:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: ae95414742703172329b3e3a3ca36fdb SHA-1: b95e2de98d5f52a493cf3cbaca9eec62c40f3376 SHA-256: 882d49d8e0dc7a02fa0b8dce7f6ba81c2eadea4fcf165580d163db9a0fd59453
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as free game hacks and generators. The primary link directs users to 'netcdn.xyz', which is associated with malicious activity. The document's content and embedded links strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9293

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-java-edition-free-trial-game-hack In PDF document text
    • http://dialine.cz/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://dialine.cz/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://dialine.cz/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://dialine.cz/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000461b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x461B 24656 bytes
SHA-256: 7ec3939f15c801c5459bef2f88a3b7a2d97431084baa984d063aa5a4b04e24d7
font_01_sfnt_off00007da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA5 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off000087fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off0000920b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x920B 18240 bytes
SHA-256: 1be29b22a500e2a60a7236cc7f3818504a778037c129f908a3826a58d12b939a

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