Malicious PDF — malware analysis report

Static analysis result for SHA-256 18313ce16b487749…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 18:47:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: eb9c5f561fc991aab1e7ec3d2b0ec65b SHA-1: 14ec20e83df9070b2059bd4c7acd953c6f95baa4 SHA-256: 18313ce16b487749a43a5ee5bc3a60e26cb56250b2b185e07ac09ae40cc0554a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The document body and embedded URLs strongly suggest a lure to trick users into visiting these malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/can-i-have-robux-game-hack In PDF document text
    • http://zarinnameh.ir/images/get-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/rbx-gg-free-robux_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
stream_003_off00004a73.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A73 25448 bytes
SHA-256: 5665681991d26f67f3a4b7e90d44a01ee5f17f08e73e0572c2962fa9c3526539
font_01_sfnt_off0000851e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851E 18192 bytes
SHA-256: 0250f7b69c7972ef324ba1c8d2d49f74b4433b7bc69e5f56b00cba1f8f788d12

Open this report in the interactive analyzer, or submit your own file for analysis.