Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d7bd45cc92780b…

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 05:09:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 31b3dbcb30844901db747f688401a9f3 SHA-1: 52a0084107275f7a429ca2a7bdae32aca7db9048 SHA-256: f7d7bd45cc92780bb83ef6c829426c3712a0ff2bcc83c2adb19346bb6d5b95b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to a known malicious redirector, disguised as a game hack generator. The primary lure is a 'free generator / game hack' theme, directing users to the URL https://netcdn.xyz/app/406889139/mcpe-master-coins-hack-download-game-hack. This suggests the document is part of a phishing or malware distribution campaign, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/mcpe-master-coins-hack-download-game-hack In PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/login-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b32.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B32 24496 bytes
SHA-256: aa8a3970863ded7f84d322ce2d1ac6d198b9e21cbf96ace34cb8896701324050
font_01_sfnt_off0000824c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824C 18472 bytes
SHA-256: d90a51be2fb0e46f52fe818f09ffb57ced98c32b74c64ba127c312db9c6591fd