Malicious PDF — malware analysis report

Static analysis result for SHA-256 2acc0773768e69f1…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 18:42:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2a9234d8ce13d22aecb2adbb8caca3ac SHA-1: 2521e05fa7376201c8190f8f9dd2d1e5eccfb1df SHA-256: 2acc0773768e69f15fdac6df141095b581747065bc5e56cb08fbf2a8f07f9535
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to free game currency and hacks, specifically mentioning Roblox. It includes a critical heuristic firing for a malicious redirector link pointing to 'http://netcdn.co/app/431946152/roblox-how-to-make-a-shirt-for-free-game-hack'. This URL is likely used to deliver a second-stage payload or phish for credentials. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-how-to-make-a-shirt-for-free-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-free-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-250-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-from-obby_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/swagbucks-for-free-roblox-account_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/the-cheat-mac-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/one-time-payout-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-system_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/new-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-codes-2021-march_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-dragon-ball-rage-roblox-android_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-grab-points_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hacking-prison-life-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/blox-land-free-robux_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_off00002ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBF 22004 bytes
SHA-256: 048d9e50f782aaa6ae2650b4a23ac611e53c5f6d234e2aa470e73a8c008f68d5
font_01_sfnt_off00005f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F49 19572 bytes
SHA-256: 4b9f319bec59275028348310dee5d789024ebdfe0bb99edc1bedbd20d116b892

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