Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a637278bcb8757e…

MALICIOUS

PDF

49.1 KB Created: 2021-05-17 03:31:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2ec652cd45d8c1106992de3474bcafe8 SHA-1: 04a4f5994b8254481fa8eb08b629b583887d2ddf SHA-256: 6a637278bcb8757efce7d944cffd345b3bf1756343215852c8920ac647bc12fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, masquerading as free game currency generators and hacks. These links likely lead to further malicious content or phishing pages. The document body and embedded URLs strongly suggest a lure-based attack pattern aimed at tricking users into visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/free-robux-no-human-verification-or-survey-2021-game-hack In PDF document text
    • http://gods-own.org/images/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.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
stream_003_off00004b68.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B68 30304 bytes
SHA-256: e7e19da621e3a6d08db71264ecf485b5ac8c15487a01e2749bc3abfa88734f90
font_01_sfnt_off0000900e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900E 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off000099ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AE 19556 bytes
SHA-256: 08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8

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