Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5923c1382054e16…

MALICIOUS

PDF

45.1 KB Created: 2021-05-15 12:02:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 518b8f668c1439de953d847a437fdd5a SHA-1: 5486f93c4e689988f7e94a3a9da6af6b7efc1ee4 SHA-256: b5923c1382054e161099cc2163a66f563e05f690f253f1546c1b905359f4527d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free gifts to entice users to click on links. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/free-gifts-coin-master-game-hack In PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/google-how-do-you-get-free-robux_GM431946152.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_003_off000049ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49EE 26144 bytes
SHA-256: 29b8e835a85c26df3b0d6e7e54575167b267cab1ccf9607bffaac8c462d74207
font_01_sfnt_off000084a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A1 17712 bytes
SHA-256: 982f424818d2cc6c65a12e1040d006be3e19cba50bc69db2ca0f75fa75a43871
font_02_sfnt_off0000a4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E3 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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