Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd33a456c67723f…

MALICIOUS

PDF

46.8 KB Created: 2021-05-14 11:06:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0e0c586a9b68955055a93919ab9432db SHA-1: d54e331e329bcffd83f47bb7898577bdf4375fe2 SHA-256: ffd33a456c67723f6632d5b997a9823223f2660b2d59b101161e69a6abff2c34
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free Robux' or 'game hacks'. The document body, though partially corrupted, contains similar lures and references to these malicious URLs. The presence of these links and the heuristic firings strongly suggest a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/make-free-robux-game-hack In PDF document text
    • http://aspiesretreat.org/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-do-you-download-minecraft-for-free_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA4 31332 bytes
SHA-256: 3628c844fb424342309b9a6eca8a7712765b967844b82f4612a56eae895d3944
font_01_sfnt_off00009408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9408 18608 bytes
SHA-256: ffc801fe6c311414aab45f29f725ac19f85306497fb99419c1a1229f9950fbca

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