Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f4ce3a28f80a16b…

MALICIOUS

PDF

42.9 KB Created: 2021-05-10 16:31:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 752f68d09008d82411aef3c1dd08b2a4 SHA-1: cfe6238a6ecafa94d9de588c6998cb5072874859 SHA-256: 0f4ce3a28f80a16b36b71f4403a2fad04b506bfad2a28812f4da38c2888ac55f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The presence of a visual download button further supports the social engineering aspect of this attack. While no scripts were directly extracted, the PDF structure and embedded links strongly indicate a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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/479516143/free-minecraft-skins-pc-game-hack In PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/robux-codes_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-link_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_003_off00004d92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D92 25364 bytes
SHA-256: ae3b31fdecf97d328e0ee88863cbd778298102aca67cb67c695527b754ecd099
font_01_sfnt_off0000869f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869F 17892 bytes
SHA-256: 38d2ac9589c51081060ff5b719ef2985d9213db1bca3ba0b1a36204662c24b5d

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