Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a27d00e17c1f8d7…

MALICIOUS

PDF

45.9 KB Created: 2021-06-11 00:53:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 289733d6df4bcd1401c875b8133970f8 SHA-1: 0f7ba084376aa4bdef0ff174e2f40456c55769fd SHA-256: 0a27d00e17c1f8d7833c35b1db3cd3c59e8624dfe50af0797be447e72275de73
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on game hack generators and free in-game currency schemes. The primary link directs to a known malicious redirector infrastructure. The document body and embedded links suggest a phishing or scam attempt, likely to lead users to sites that host malware or attempt further social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://netcdn.tw/app/431946152/how-do-you-get-followers-on-roblox-hack-game-hack In PDF document text
    • http://www.salwangurgaon.com/files/roblox-18_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/unpatchable-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/roblox-jailbreak-hack-application-free_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005286.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5286 26428 bytes
SHA-256: b691093914b6b2985a2c0d20cab140d136d0a59bd1e63e10bf5b23a4adbc321b
font_01_sfnt_off00008e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E94 19084 bytes
SHA-256: c8cf72cd82fd4939d1c7b83df763567ecbff2c72e0745e2578aa3e2d643e3051

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