Malicious PDF — malware analysis report

Static analysis result for SHA-256 b33062240914ee85…

MALICIOUS

PDF

43.5 KB Created: 2021-06-04 02:20:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7fb3d9f160fc838579b02ebccb6abd19 SHA-1: 6a2dbe8db2cb0268d13b507a86e10d8db00f5671 SHA-256: b33062240914ee85e3f470fa324c110b45eca139ac02b953696c34287aeb8d17
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting a 'Coin Master Hack'. The heuristic firings indicate that these links are associated with known malicious redirectors and game hack lures. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into visiting potentially harmful websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/coin-master-hack-without-root-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-for-free-on-phone_GM479516143.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_004_off00005078.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5078 24344 bytes
SHA-256: 9de0d54246533ef05335c24103ec39b946d5349ac0e6b47cad57e9d2d8ece07c
font_01_sfnt_off0000878b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878B 18220 bytes
SHA-256: 362aa068b196d4519c7cab909f91a3673cdf28c2147f03b6d737df4b2e6e708c

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