Malicious PDF — malware analysis report

Static analysis result for SHA-256 145e4c0f7895286e…

MALICIOUS

PDF

47.9 KB Created: 2021-05-14 13:07:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2d64320bba9502b9a3556a09117839d2 SHA-1: fdff266a5ec61d456dfddd32d496480136a740aa SHA-256: 145e4c0f7895286e2043f5792009da7b5b4571710392d6f162bb003806421ee3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free spins. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious, increasing confidence in the assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/coin-master-2021-free-spins-link-today-game-hack In PDF document text
    • http://zarinnameh.ir/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49EB 31772 bytes
SHA-256: f4ab1335567c1d33a8212ee455cdc1270cf51bdbe459181a66ff489c837f5b31
font_01_sfnt_off00008ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCB 2956 bytes
SHA-256: aa05c93583c8bb1ea916fd69c8a28a5c303188c92667d4ae562bb4fa0c3eac9a
font_02_sfnt_off000096ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96EE 18812 bytes
SHA-256: 1796d469d6688880968d5d589eff493e0f1aaa6a9dd62a8c2503fd741fb93e80

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