Malicious PDF — malware analysis report

Static analysis result for SHA-256 15531b03ec8d3930…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 03:32:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 70479a54e83a0ada1916d28bdcff702d SHA-1: 69efd55d4cd93d5af1388bbcf4e76fbc9be44e14 SHA-256: 15531b03ec8d39303cd18ed85962746df7acda2fed319023867131d06faf9b90
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to a malicious domain, masquerading as a game hack or generator. The heuristic firings indicate that these links are known malicious redirectors and are part of a lure for free game-related content. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into visiting a potentially harmful site.

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/microsoft-rewards-roblox-game-hack In PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/how-to-hack-unblock-roblox-password-on-computer_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1surakarta.sch.id/__statics/gudangsoal/files/rbxoffers-earn-free-robux_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_off000032a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A6 22212 bytes
SHA-256: 6aa55d2bcea988e8877fac43a25fc36372b94535342451221f0bd140faf6b85f
font_01_sfnt_off00006434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6434 19244 bytes
SHA-256: d5888bc21d96057e7009fdb8feb27fe5023594e25ad385ee997f7bd9f560ccf5

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