Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad1d0e5e19c69ecf…

MALICIOUS

PDF

45.9 KB Created: 2021-05-16 08:38:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: cd3e057347d51bb5624bbc6321e07e6e SHA-1: 03914f9776d5c27f11e068ce6cd0f84ca57b99bf SHA-256: ad1d0e5e19c69ecf3091ba4892a0d068687e39bd58332b94fa3191f2933bc501
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links, with a critical heuristic identifying one as a known malicious redirector. The document body and heuristics suggest a lure for game hacks or generators, aiming to trick users into visiting these malicious sites. The presence of multiple links to similar content reinforces the phishing or scam nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/village-coin-game-hack In PDF document text
    • http://www.herricht.at/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.herricht.at/images/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://www.herricht.at/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://www.herricht.at/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.herricht.at/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000497b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497B 27472 bytes
SHA-256: 5f92faf64674ace0b815388e1cf43561382d274d802e8a7614916992b047e1c2
font_01_sfnt_off0000885b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000920c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x920C 17936 bytes
SHA-256: c6aadd6bba30b78db694b71701f7af3ade86557ade0239788484cb0b421f41b7

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