Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b65dab04d66c6d5…

MALICIOUS

PDF

35.3 KB Created: 2021-07-02 05:49:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f8b57defec4959b706a8b3bf897c4f6 SHA-1: 5d1e01db69d3ce8d77e153e799c9f7be14754372 SHA-256: 2b65dab04d66c6d53909bed9f20557f9b1a643d966e12dc853a9ec2ab105a4ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users. It contains multiple links, including one to a known malicious redirector, which likely serves to deliver a secondary payload or phish for credentials. The ML classifier also strongly indicated maliciousness.

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/free-robux-generator-no-verification-2021-game-hack In PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/roblox-free-builder-club-hack_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/original-roblox_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/roblox-legendary-football-vip-server-free-2021_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/modo-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/free-roblox-noclip-exploit_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://belajar.kurman1kotasemarang.com/__statics/gudangsoal/files/free-roblox-paddwords_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_off0000328f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328F 22032 bytes
SHA-256: 50099edc5ba74fd0ea8745bc92eb6a911c1e98877b338b264bd691c9fec0c29a
font_01_sfnt_off00006367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6367 19476 bytes
SHA-256: 422264a0cdeadcdb3e2ce6070f5cb4f9bd6f0b6f51af0cd9a99234ab5f0c0b46

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