Malicious PDF — malware analysis report

Static analysis result for SHA-256 554837116369f0d9…

MALICIOUS

PDF

42.7 KB Created: 2021-05-19 02:12:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4d229beec1cce7c8c79de67168a5fb5d SHA-1: 366377bb51f352001d4c35b41d58185c6d91c468 SHA-256: 554837116369f0d9cda2589c554307c29bd2246f40e9a9930ecbde08cea58958
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generators' or 'game hacks' to lure victims. The document body and embedded URLs suggest a social engineering tactic to drive traffic to potentially malicious websites. While no scripts were explicitly extracted, the nature of the embedded links and the heuristic firings strongly indicate a malicious intent to redirect users to harmful content.

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/479516143/how-to-get-minecraft-for-free-on-xbox-game-hack In PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/robux-giver_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/pubg-uc_GM1330123889.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_off00004b9b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9B 25184 bytes
SHA-256: f7890cf7de0c251125cd8b66ec8937787f348fa821b1ae0358006629ee219fae
font_01_sfnt_off000083ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FF 18472 bytes
SHA-256: 63446f7755945d37ec8b97d22fda434cb08cbf4c61a02f7f94d2af605f03b611

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