Malicious PDF — malware analysis report

Static analysis result for SHA-256 14de36d67c4a831c…

MALICIOUS

PDF

33.2 KB Created: 2021-07-01 14:57:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e9e3632f61050757baa8f5b26bd7b90a SHA-1: 45cd2b7f08a0cdedbdc4928675cee6f3b4a89a41 SHA-256: 14de36d67c4a831c267abd05afce588f4188ff545e3fbf679ac01a76222b7cff
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 promises of game hacks and free in-game currency. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The document body and extracted URLs strongly suggest a social engineering pretext to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/how-to-hack-someones-account-through-team-create-roblox-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/comandos-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/a-wolf-or-other-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-into-roblox-database_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-robux-hack-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-get-any-jailbreak-car-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-money-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-rank-up-in-a-roblox-group-easy_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-hack-download-for-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/guide--coin-master-free-tips_GM406889139.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_off00002c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C43 21668 bytes
SHA-256: 50c62aae4402ea82096781fbfb335a84f31e26625e16b8de8da3395612575356
font_01_sfnt_off00005bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC9 19488 bytes
SHA-256: b69ee4410dd7904762cde5af8ea2b7c4ddebcb23ee2ca9ae6671fe93bd6df2dc

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