Malicious PDF — malware analysis report

Static analysis result for SHA-256 012d69ac860d981e…

MALICIOUS

PDF

34.3 KB Created: 2021-06-30 07:49:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1579d82fd931c8b2d8bca81ab342c5ec SHA-1: 45b516547a1d59103a08ec1a01a744db4e84f7a8 SHA-256: 012d69ac860d981e806ffc6043d271729724b114d63b697169bd5b9f25cf11eb
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on them by promising free game currency or accounts. These links redirect to a known malicious redirector and a large number of other PDF documents, forming a link farm. The document body explicitly mentions 'free Roblox accounts' and 'game hack', reinforcing the lure. While no scripts were directly extracted, the nature of the links and the heuristic firings suggest a phishing or scam attempt, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.co/app/431946152/free-roblox-accounts-with-robux-2021-march-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-admin-in-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-robot-check_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/claim-gg-free-robux-app-by-roblox-events_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-obby-link_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/where-tiktok-free-view-iphone-11_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/irobux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hacks-para-ganar-robux-gratis-rapido_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-admin-codes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-girl-clothes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheat-generator-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-no-password_GM431946152.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
font_00_sfnt_off00002d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D58 22036 bytes
SHA-256: 98bb2ae275c95c03d6b14ca37046675a7ae489f5e22a9f18b249f1af210dc5bd
font_01_sfnt_off00005e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E65 19976 bytes
SHA-256: 51ed9d4e4cf2b005f8ce93663c2388fc16da3470ad8feabeb05e199e982a796e

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