Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa4d827234e6692…

MALICIOUS

PDF

39.9 KB Created: 2021-05-13 22:20:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 6c61fe6793597147eeba1b8a3b1131a4 SHA-1: 0fed30ca6375fdf8b0e481c0d7544d77ba7953ae SHA-256: baa4d827234e6692716f5c20e488b6bad7994bf1f2a5b2e5f1e6b2dfffda45ed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector, disguised as a game hack generator. The document body and embedded links suggest a social engineering lure to trick users into visiting malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/406889139/coins-master-hack-game-hack In PDF document text
    • https://www.ergolight.at/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.ergolight.at/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ergolight.at/images/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • https://www.ergolight.at/images/free-coin-master-spins_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_off00004471.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4471 24060 bytes
SHA-256: d6070a611e560865bdae8839d85b85b4bbccd33506a0e9fa892ae97f9b4b2565
font_01_sfnt_off00007af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF1 17716 bytes
SHA-256: d488acdeac9c101f8c7dc9d2f61752a744fbde28c1faa2289984f0ec4d4cc76f