Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f17ebe0a3742e9d…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 12:27:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 1444866f9200c067434167b3b9d38198 SHA-1: 8c08ca96a8c702ff43723fdc473d8440b3bae163 SHA-256: 0f17ebe0a3742e9dadda082cf8415985f712b0f606041e26ac4286c78759b2f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and cheats. The primary lure appears to be related to 'Coin Master' and 'Roblox' game exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at driving traffic to potentially malicious sites, likely for further malware delivery or credential harvesting.

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/406889139/coin-master-gameplay-game-hack In PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/code-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/2021-free-roblox-exploit-safe_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-robux-xbox-one-2021_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/apps-on-that-can-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-hack-v311-download_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-robux-with-just-a-click_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/gamescraft-org-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-robux-codes-2021-september_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/50-000-free-spins-coin-master_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_002_off00002cb8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CB8 22552 bytes
SHA-256: 3ce9cf71105c38aca5b558c72bfa85c1c4f6adc67723168d691a5177ac1f599d
font_01_sfnt_off00005ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE6 18524 bytes
SHA-256: 16b9cb38bcb2a142b34ef46ce62b1942e172e3ddddc78505f18b000df75c2c6a

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