Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e57444b4cc9d2e5…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 06:41:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 27a968d15d28fbb773f28d1deb51f414 SHA-1: bfeea7da40db2100f53b5d5de1820c3e57912919 SHA-256: 0e57444b4cc9d2e58c6e53d97ff1ba761c2cb712d8c42e917fd7dc630d631209
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and generators to entice users. It contains numerous links, including a primary redirector at http://netcdn.tw/app/479516143/minecraft-name-tag-hacks-game-hack, which is associated with malicious infrastructure. The document also functions as a link farm, directing users to a large number of other PDF documents, likely for SEO manipulation or further redirection. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.tw/app/479516143/minecraft-name-tag-hacks-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-steal-roblox-account_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hitbox-resizer-hack-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hack-explorer_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-and-tickets-in_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/injecthack-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cheat-code-hoverboard-ghost-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/apk-roblox-hack-pc_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/spicy-peanuts-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hilton-hotels-hack-roblox-vermilion_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-do-you-get-thengs-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E1 22320 bytes
SHA-256: b11e226312260f1ce3afac129e38095b7a4fb8a1c79cbc4ff7a6e539ac0b12fe
font_01_sfnt_off000061ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CA 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1

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