Malicious PDF — malware analysis report

Static analysis result for SHA-256 109a2f459438a662…

MALICIOUS

PDF

35.2 KB Created: 2021-06-18 23:22:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c6bebf81c059845ca413147066c3336c SHA-1: 6bd4d4ec872da9a526c4869da0006e03ba3bb1b7 SHA-256: 109a2f459438a66252ba9dad3739e419465b879a1020e977ff1f1cb939e94e29
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to potentially malicious infrastructure, masquerading as game hacks or generators. The primary lure is a link to 'roblox-free-clothes-2021-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack aimed at tricking users into visiting compromised sites.

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-free-clothes-2021-game-hack In PDF document text
    • http://library.umuslim.ac.id//repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-become-a-speed-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-working-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-free-hair-codes_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_off000031f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F6 22272 bytes
SHA-256: cc9857e34b26cee13ca637b239ec0112f77ed779ca081d13d9c8ff02513563df
font_01_sfnt_off00006384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6384 19320 bytes
SHA-256: c8d68f6a602b264e4251479fc620cdfdd0bdfb4cb1107cc988c672e103deabec

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