Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e8d5ef39918681…

MALICIOUS

PDF

47.6 KB Created: 2021-06-10 18:17:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3015dbacd2ee93cc09baa42b37bc188c SHA-1: 1297e09e4aa084a71e299c0be07effd7bed514cf SHA-256: d4e8d5ef3991868117ad5f3bb1199ed99146e212b7e7cb2b25df14b860d9b9d0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of offering game hacks to entice users to click on a link. The link redirects to a malicious URL, indicating a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for further malicious actions, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/ultimate-driving-hack-roblox-game-hack PDF link annotation
    • https://www.anders-sofa.com.tw/uploadpic/files/free-hats-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/clients-minecraft_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/pubg-uc-whatsapp-group-link_GM1330123889.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/cheat-codes-for-roblox-vehicle-simulator_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-spins-coin-master-2021-today_GM406889139.pdfIn 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_004_off00005342.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5342 28304 bytes
SHA-256: a55c84566d15e66a70a800920a31d81bb27df37b4d02197ad52a66311cfbeec8
font_01_sfnt_off0000946e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x946E 19420 bytes
SHA-256: d73f867e819bf44d1124e0694d602b45291987a300e49595c3d54156df78a646