Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e025b6554e10b67…

MALICIOUS

PDF

48.6 KB Created: 2021-06-11 09:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5df436df2f4452ede9d099d5eb350f7a SHA-1: 68e63deee3d6351e62396b62fcd7606ab425d99e SHA-256: 1e025b6554e10b67b08feb896f75ccc3eb4b64e0f211e3be914bdd113def0953
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as game hacks and giveaways. The primary lure URL is https://netcdn.tw/app/431946152/pollo-loco-youtube-hack-roblox-game-hack, which is likely intended to lead users to a malicious site or download further malware. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/pollo-loco-youtube-hack-roblox-game-hack In PDF document text
    • http://library.persadabunda.ac.id/repository/mcpe-116_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/allintittlefree-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-roblox-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-t-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/tiktok-free-follower-no-human-verification_GM835599320.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/pokemon-go-free-key_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000509a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x509A 28084 bytes
SHA-256: a0f86650d60d78bc3ddc50c034a0af3b6aadb5e037c3c2edd55ea9e97d8ee22d
font_01_sfnt_off00008fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE8 2908 bytes
SHA-256: e28d2c57f35643e2026f86c34ac3bb63cba74be3f6c066e81aba6d285e5a121b
font_02_sfnt_off000099e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E2 18744 bytes
SHA-256: 705c30c3f6b1f979259ad62e4e86fe49113858db3505ddacb721ca8a073543af

Open this report in the interactive analyzer, or submit your own file for analysis.