Malicious PDF — malware analysis report

Static analysis result for SHA-256 e963ece849a3ed24…

MALICIOUS

PDF

32.8 KB Created: 2021-06-28 08:55:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5dbdfd39f9aaa6850aa802663da493ca SHA-1: b295961a55d4398bad58bf5d1d40cc2f19c78bd0 SHA-256: e963ece849a3ed24d48c782001431715eee6b1ba45fe213137b15842552dd355
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as generators for game currency like Robux. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirection chain, likely intended to deliver further malware or collect user credentials.

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/money-money-roblox-free-catalog-game-hack In PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-roblox-t-shitt_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/robux-free-gift_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/robux-hack-no-human-verification-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/phoenix-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA1 21316 bytes
SHA-256: e1d96a6f24ab59db71d3fd0c89fd61fd191be2aff9114d94e205b5615c721190
font_01_sfnt_off00005aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAA 19128 bytes
SHA-256: 41cab6a25c3a0c0073fe2c6dcc71f7eeb8191729d5d10ce95959b97610b95090

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