Malicious PDF — malware analysis report

Static analysis result for SHA-256 52586bf0d5c6843a…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 06:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d28059dd58461e93d1a543d0ea16442a SHA-1: f3a0feb9849b4b1b264d0bf16c59fd7d78e5045b SHA-256: 52586bf0d5c6843a933f1616133bb5969638eb765ea0058ec5dde8c621f6137f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, such as 'how-to-hack-peoples-roblox-accounts-game-hack'. These links are flagged as malicious redirectors, indicating a likely attempt to lead the user to a malicious site for further exploitation or credential harvesting. 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.tw/app/431946152/how-to-hack-peoples-roblox-accounts-game-hack In PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/freerobuxexe_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/roblox-robux-hack-generator-99999-robux-loladarnel_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/blonde-girl-hair-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/comment-hacker-le-catalogue-sur-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmlangkawi.com/opac/repository/free-robux-jan-2021_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_off000030c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C3 22116 bytes
SHA-256: 77acf6d4873eff567da16277500fed61e523c8f56baf0916192afd50ecb94dc9
font_01_sfnt_off000061a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A8 19392 bytes
SHA-256: 455054d53819942057d20be51cc97c11c8340df0e33a1662ffdae35838096838

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