Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e271cfd581cd9f…

MALICIOUS

PDF

33.3 KB Created: 2021-06-19 12:33:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4aca4cbc17534a7b9c4e734afe0d5e71 SHA-1: f24e3cfb8059f120e6fd1d9e678603ffcbce3317 SHA-256: e2e271cfd581cd9fdc2588c2fbba25b57f59ddfeaf307584455692779c711112
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on them under the guise of free game hacks and currency. The primary link directs to a known malicious redirector infrastructure. The document body and heuristics indicate a strong intent to drive traffic to these potentially malicious sites, which likely serve as a gateway for further malicious activity or phishing.

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.co/app/479516143/free-minecraft-server-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-roblox-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/crax-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-boombox-codes_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-cheat-in-roblox-paint-n-guess_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-verification-or-email_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-rush_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-hats-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/win-free-robux-robux-robux-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-dantdm-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-2021-2-4_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-capes_GM479516143.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_off00002ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF7 21948 bytes
SHA-256: d6db8d7d13a2ab7546cb61ee06ca80f64799e7872b866fa8bffc8022241e146d
font_01_sfnt_off00006032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 17968 bytes
SHA-256: 467ba59745922621ddb9e57f68c7b79a6418f7a75fac5793c5b2ba4d9bdeb419

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