Malicious PDF — malware analysis report

Static analysis result for SHA-256 658f3da97a5913cd…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 01:25:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d8ef834ae1ab34b7c4be30d3495b1711 SHA-1: d6843f768fb93d1ec34724ed5b5d2541c9158eab SHA-256: 658f3da97a5913cd30fa9bf1e59bb9c50cf89db4c61328401384441ef507c3ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users with promises of game hacks and free generators. The heuristic findings indicate that the primary URL, http://netcdn.co/app/431946152/how-to-hack-in-roblox-dragon-ball-rage-game-hack, is associated with malicious redirector infrastructure. The document body reinforces this by directly embedding this URL and other similar links related to free items and hacks in popular games.

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/how-to-hack-in-roblox-dragon-ball-rage-game-hack In PDF document text
    • https://repository.umgo.ac.id/repository/where-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-roblox-accounts-phantom-forces-account_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-treelands-hack_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-insta-arrest-hack-jailbreak_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-robux-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-cheat-engine-62-robux-hack_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/hack-roblox-fy_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/roblox-script-hack_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
stream_002_off00002f55.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F55 22508 bytes
SHA-256: f6b99b7c96ba6c40a3923868e307ddc7c16235eea5fd3cb3a4348b45dac5be8f
font_01_sfnt_off00006170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6170 18988 bytes
SHA-256: d89c2f9531926b0ab25912b4ebd5b6c16465c7b0c94cfb80a88f656b8504fb4d

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