Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1a97cef9277f6a…

MALICIOUS

PDF

53.8 KB Created: 2021-05-14 15:04:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 34627e23feb695c35c6659592e497f56 SHA-1: acbfc32f2c307451ef3f31fec010098983782218 SHA-256: 7b1a97cef9277f6a0f669622fcd3b6d5db48c4bb1131a4b0e28d208fb8436511
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual lure suggesting a download, consistent with a phishing or scam attempt. The primary URL, https://netcdn.xyz/app/431946152/roblox-free-vip-server-game-hack, is likely the intended destination for a malicious payload. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9365

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/roblox-free-vip-server-game-hack In PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/roblox-pics_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pasuruan.sch.id/__statics/gudangsoal/files/roblox40com-robux_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_off00004eaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAF 39552 bytes
SHA-256: dd12e457bc37371e4bbce4503635e19075142adabec14f77e53eabd00a1a8d5c
font_01_sfnt_off0000a4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E0 3100 bytes
SHA-256: 2312fc4840a22ec6321bad057bca980d7cf9b1ab19aec357a5fc029593510009
font_02_sfnt_off0000afae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAE 18492 bytes
SHA-256: 1efcb06d77819d5fa3ff728d904b801bcae5178dc1aecdda37cae25940162132

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