Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb5bffa120c0ba9d…

MALICIOUS

PDF

42.9 KB Created: 2021-05-11 08:12:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 341bcc9e9ef9daff126c74648b1bef59 SHA-1: a1c405afbdce3733bb43ab9dc29f9708e315b346 SHA-256: bb5bffa120c0ba9ddf98b6ec582f8cc80aafbbb89886a0511cf34b299b4e82c2
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 0.9971

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/406889139/200-free-spins-coin-master-game-hack PDF link annotation
    • http://homebackpackers.com/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://homebackpackers.com/images/coin-game_GM406889139.pdfIn PDF document text
    • http://homebackpackers.com/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://homebackpackers.com/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://homebackpackers.com/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://homebackpackers.com/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://homebackpackers.com/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://homebackpackers.com/images/free-coin-master-coins_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_off00004b98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B98 25596 bytes
SHA-256: b38ed12a050109ce19a6ff116c563aeba2ccfd571025edbb0695de08181a3041
font_01_sfnt_off000085da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DA 18180 bytes
SHA-256: 322b0d5b629f6df55fd3c77851cbfe7ee71104dfe1b9214827344950ced1d0df

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