Malicious PDF — malware analysis report

Static analysis result for SHA-256 01298026f9076bd3…

MALICIOUS

PDF

42.7 KB Created: 2021-06-11 09:20:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d79bf66471e147e49c9c0169cae1a58c SHA-1: 5bf5b1404b44d0c7cbac7ddce894ce11f0c40104 SHA-256: 01298026f9076bd320919ac7fa9537d93ca65063e444ae1873542661bfcc33b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and other suspicious URLs, disguised as "free generator / game hack" lures. The document body and embedded links suggest an attempt to trick users into downloading potentially malicious files related to games like Roblox and Coin Master. No scripts were extracted, but the presence of multiple malicious links indicates a high likelihood of a downloader or phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.tw/app/431946152/free-roblox-rum-game-hack In PDF document text
    • http://foo.com.tw/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-online-free-no-sign-up_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/pubg-uc-add_GM1330123889.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/free-minecraft-bedrock-server-hosting-24-7_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_004_off00004d57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D57 24152 bytes
SHA-256: ab15ad9d25c817f93a96490154b08809661f30994c85604cb64441abf0e2c1c1
font_01_sfnt_off00008438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8438 18348 bytes
SHA-256: b62b065b3ffebc886560d61978a6a808d4549abda2de7fe77a05d96ffec6a609

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