Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bc670682003898c…

MALICIOUS

PDF

34.0 KB Created: 2021-06-30 01:50:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 76f9dbfc4ec8341f62a49fb40c130309 SHA-1: 44c6c09d11e1d67a0dc7df481e7f454415963cd4 SHA-256: 2bc670682003898cc626e45f56970c83449619906c128554393291ed72eefe31
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure, designed to lure users into downloading potentially harmful content. The document body and embedded URLs suggest a scam related to free game currency or hacks, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection and a lure for user engagement.

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-online-roblox-games-no-download-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/make-robux-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/theres-no-way-of-getting-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-card-codes-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-red-free-pants_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hack-zombie-attack-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-level-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/hack-de-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-dominus-codes_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-wall-hack-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-22k-from-groups_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-skywars-hack-download_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-hack-robux-promo-code_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-clothes-temp_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00002ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE5 22204 bytes
SHA-256: a568617f4c810532339b4912ef633eb28e2c26f8b964d93d47fa1ddb85ec47c5
font_01_sfnt_off00005e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E48 19536 bytes
SHA-256: 7ba8dcb083012f654aac476fd7a5c32dbcebc2decc8e8a2b88dae6253dc4b7b6

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