Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed34e514e6129e0…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 21:40:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 609a471c96b46016c601ee48c06bd36d SHA-1: 3fa901d3d1ca05f21394f9c73aaad2d0e12748ff SHA-256: 1ed34e514e6129e0e8df07d58da30faf8f5c095a1efeae0cff99c2fa3227f056
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link pointing to a known malicious redirector. The document body and heuristics indicate a lure for 'free Robux' or game hacks, designed to entice users to click the malicious link. This likely leads to a phishing page or a download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-no-survey-game-hack In PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/free-haiir-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-max_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-in-poison_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/youtube-roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/instant-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn2-kotabekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_GM431946152.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
font_00_sfnt_off000032a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A0 22756 bytes
SHA-256: 0809f47212b7dd174043a6cc40611b7656a7d25ec2ea72b3a2c63e68e071c5cc
font_01_sfnt_off000065a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A4 19012 bytes
SHA-256: 4e4ee538de79ec7e4a2325d57c934275716f5f92a64f1321ae55620a5fe6760f

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