Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5c4417249886429…

MALICIOUS

PDF

42.4 KB Created: 2021-05-15 00:42:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 85d50dae86166a3b54948a8d6ccc33c0 SHA-1: be8314117a6cbc097285000560f8aa20a0b2205b SHA-256: a5c4417249886429433320fa0b6051ab9877408e55b2f8449dc28b460d934db6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as offers for free Robux or game hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of further malicious activity.

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/complete-offers-for-robux-game-hack In PDF document text
    • http://www.dimalcco.com/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.dimalcco.com/images/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/roblox-bloxburg-free-money_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
font_00_sfnt_off0000485f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x485F 26396 bytes
SHA-256: 127676dd45fd8e3abe36b7f6ebc3f56e34375269506cf9d748aaa6c298dc7bd6
font_01_sfnt_off00008233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8233 18628 bytes
SHA-256: 27a538390e2791e01883ed63320744732627358ab115b0534bac8ed790d0f8b6

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