Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de72210065d49b5…

MALICIOUS

PDF

44.8 KB Created: 2021-05-17 11:08:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d524a57a28a83bdba62289a68bbf2794 SHA-1: b40eb686c790e97c9e20e3d82962d52e8507279e SHA-256: 4de72210065d49b57597558bdca457cd4fbc04920f9ea4b4f9529cf440eed71f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free game hacks' and generators. The presence of these links, combined with the ML classifier flagging the PDF as malicious, strongly suggests a phishing or scam attempt. While no scripts were explicitly extracted, the document's structure and embedded URLs indicate an intent to redirect users to potentially harmful content, likely as part of a broader phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-java-for-free-game-hack In PDF document text
    • http://cosmosdawn.net/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/rbx-com_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000499b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499B 25008 bytes
SHA-256: 7f274bd037263db8f88ee96d4e5edce0a5eac7aebb71931da5cc10fad6c916e9
font_01_sfnt_off000082cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 3128 bytes
SHA-256: 801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9
font_02_sfnt_off00008d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0C 18152 bytes
SHA-256: f45ec97da20a8e70f6e7437c3ced33d3bcbd99aef5af4daf3be0ff08d51a9e58

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