Malicious PDF — malware analysis report

Static analysis result for SHA-256 003fc522dc9bbd4a…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 04:48:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a33cd442db00681037ad81f7186dbcbf SHA-1: d23f6e71ec355f0a8bbe9bbd10f8968674ef064a SHA-256: 003fc522dc9bbd4a7f84bf2511efa872ff363dd9c0674ba029eae3340818ec49
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that advertise free in-game items and game hacks, suggesting a phishing or scam lure. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of external URIs and the document's deceptive content indicate an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.online/app/479516143/is-minecraft-free-on-computer-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/pubg-uc-seagm_GM1330123889.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/pokemon-go-free-qr-codes-2021_GM1094591345.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000576f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x576F 26424 bytes
SHA-256: d9125337420a776fe71fed679b8d7f32399860ecb52eb67c5558a1952bff84cc
font_01_sfnt_off00009191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9191 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B43 18284 bytes
SHA-256: 8186214d340ecaefeb8d2e1287a453c09f41e8188bbde515826fde5952553fdc

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