Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ee8fbf949f8b9a…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 11:11:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6509f8cfd11742583b492dba859a2a40 SHA-1: a7773b823c74aac455b7e4ce1e0861fbd220f835 SHA-256: 14ee8fbf949f8b9af16df96a0c9e9a9193b85ef01b429ae12c65b0c33b6e8c32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or phishing pages. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a social engineering attack.

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/freespinandcoin-blogspot-coin-master-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/avatar-animations-roblox-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-code-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/custom-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-robux-hacks-for-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/can-you-get-free-robux-on-your-birthday_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-denis_GM431946152.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
font_00_sfnt_off0000305a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305A 23100 bytes
SHA-256: c338c4e2aa4006d260a0494ae38151fa77051c6925763ec320bc773e060148ec
font_01_sfnt_off0000648a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 18636 bytes
SHA-256: d84bb04fefb4f2e9dfb813ccc956a98457a2ce2ab52c22d2d2b9038e7737e303

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