Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9113de876ab13ab…

MALICIOUS

PDF

52.1 KB Created: 2021-05-17 06:06:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cb8a5e65ded52dd43de92c0a9db1f040 SHA-1: 1660e9ddad42a9ee40b347035870961b0059e19d SHA-256: b9113de876ab13ab1d4b4a15076323ab1ed272eaf6700cc611749063b43b2715
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9138

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.xyz/app/431946152/wahoo-gaming-co-free-robux-game-hack PDF link annotation
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/robux-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/roblox-printables-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/wurst-client_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn1lomboktimur.com/__statics/gudangsoal/files/how-you-get-free-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_off00004bdb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BDB 31568 bytes
SHA-256: aa161304bb5c1e54c89ea1b9044267e8e8fae8fdc9928edda880f87be0032457
font_01_sfnt_off0000958a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x958A 4660 bytes
SHA-256: b8980cdac4d025496d9fe039d8c05bb5b9bae1b804244a1f9c05e9663db72816
font_02_sfnt_off0000a59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59A 19624 bytes
SHA-256: 18eed364a8d6f387b600ea09ebc4ef128011db11f9760b31c367eef05bf8c7fb

Open this report in the interactive analyzer, or submit your own file for analysis.