Malicious PDF — malware analysis report

Static analysis result for SHA-256 178ce04f411a8359…

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 23:29:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5b74fa7440b3567cf7a3b148e0fd2fbf SHA-1: 402538bcbf54984030db47adc86d8428d89647f4 SHA-256: 178ce04f411a835904c0dea10281949cd39d87474510c37633542f3820c35b80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generator / game hack' lures. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. Although no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, aligning with common phishing and social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.online/app/406889139/free-spins-on-coin-master-game-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/pubg-uc-redeem-code_GM1330123889.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/sites-for-free-spins-for-coin-master_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_004_off00005085.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5085 25892 bytes
SHA-256: 75314971cccc856c3ee040c84a8de0fd7fd4ee593d38e53f2c1ce96546309f08
font_01_sfnt_off0000895b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895B 2820 bytes
SHA-256: e5f6ec650849eefe6bc6a1649c2875ce35328d23e4196945bba66cc43e5a49d4
font_02_sfnt_off000092fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FA 18148 bytes
SHA-256: b1f30c98449655e0c119849c00bf29bb9bd656252beb56b2567f3adea4b6d957

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