Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4489025e007b691…

MALICIOUS

PDF

34.7 KB Created: 2021-06-18 05:29:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 77a00b821ea5f05214a58ffac152033d SHA-1: aaf781f392408ee1ad55c2e11233ab98ead606da SHA-256: e4489025e007b691ba086fff63d174441403a466ef5c2a31e8f2aa2fe661ab8a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

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/simple-free-robux-game-hack In PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-sans-hacks_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/pokemon-go-free-promo-code_GM1094591345.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-accounts-obc-lifetime_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/avatar-animation-free-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-website-no-scam_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/are-pubg-uc-cheap_GM1330123889.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-coins-coin-master_GM406889139.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_off00002f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F21 22680 bytes
SHA-256: e9b18e4292de1fdcb120f6bfc8450db901db59f66dc6bbca9ac22e4c30bd4300
font_01_sfnt_off000061d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D2 19348 bytes
SHA-256: 0949cd47e1f24108a700cbf4ce92fc3a5f876a993f3fbdfc8b2fbfed0fea9d0b

Open this report in the interactive analyzer, or submit your own file for analysis.