Malicious PDF — malware analysis report

Static analysis result for SHA-256 c786b67703159222…

MALICIOUS

PDF

43.2 KB Created: 2021-05-12 09:30:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: f6da63d5858a9268de23d18d48509b41 SHA-1: 02df0521913a6160ccc87ac3af8dc26f1bc84b40 SHA-256: c786b6770315922292e1b09c28a81fd3c4509c0f525e93d46431a363c1bc168a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. These links likely serve as a distribution point for further malicious content or phishing pages. The document body and embedded URLs strongly suggest a scam related to in-game currency or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/is-there-a-way-to-get-free-robux-game-hack In PDF document text
    • http://tileworld.com.au/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spins-coin-master-app-iphone_GM406889139.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_off000046a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46A7 26984 bytes
SHA-256: dc4240ca72827bd35658ba5019afdbe31deef63eae13a1b6dbff0d1e928fa41a
font_01_sfnt_off000084c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C3 18892 bytes
SHA-256: e2ca2daecae93cd27ff1d51a172310d30bada5b25af9f9600d3ad780ee102f76

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