Malicious PDF — malware analysis report

Static analysis result for SHA-256 48fe2a72f2ddb057…

MALICIOUS

PDF

33.5 KB Created: 2021-06-26 05:28:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8d9f2375d280ea1de49671a0c8cd3a94 SHA-1: b726b0a93b0ed7ac60f3e1afe2e0ce3fa2632b18 SHA-256: 48fe2a72f2ddb057be43a86ace026bf25409996e342bcb278d06b8f0be734413
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to a known malicious redirector, disguised as a 'free generator / game hack'. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-robux-no-wait-unpatchable-game-hack In PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/exploit-roblox-download-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-for-obby_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/roblox-risky-strats-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/poke-coins-pokemon-go-free_GM1094591345.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFB 22380 bytes
SHA-256: 3b667bbdf1753c61e5c153b4a797b1d8b026379cd2229e10195c09f1d02467f9
font_01_sfnt_off00005cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC8 19556 bytes
SHA-256: 7f6d82c52e10c5fda06115727ffff170df79b82249887b0c5b0b1dd3636bdea3

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