Malicious PDF — malware analysis report

Static analysis result for SHA-256 c098549a62ca153d…

MALICIOUS

PDF

41.2 KB Created: 2021-05-13 01:05:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d605892a22d6ecc0718bc4ca53b9b2ff SHA-1: 0c3fce5f9da6763ca4c4f8b0addbe61a928b198a SHA-256: c098549a62ca153db41fa8c14a23b0d1715c3b1a00ecbb10be36c8adbd295b70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on them by promising free game items and hacks. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded links are the primary attack vector.

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/lazyblox-com-free-robux-game-hack In PDF document text
    • http://korporacjaroma.pl/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://korporacjaroma.pl/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://korporacjaroma.pl/images/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://korporacjaroma.pl/images/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://korporacjaroma.pl/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.communes.comIn 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_off00004597.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4597 24064 bytes
SHA-256: c3ae32352b36eec49c0d67c68330bf1571e314f65bd7500f4e72f2db1521ef85
font_01_sfnt_off00007caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAA 18840 bytes
SHA-256: c7a12f46af2ab2e47f5138dce66a585f9a7928693d977e55c66cac0a0236f754

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