Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa241a5750597bdf…

MALICIOUS

PDF

43.4 KB Created: 2021-05-20 02:48:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: af26f93da5b53f67ee98b908cfdbcaca SHA-1: 1eaf159865ef4c7725cabfb91d170281e8024dac SHA-256: fa241a5750597bdfdd246dad1793c08bdd15e4aea6db9a1895e2ce2e2136f78f
122 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 0.9648

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/1094591345/pokemon-go-free-vs-premium-game-hack PDF link annotation
    • http://babbibooth.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004837.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4837 23732 bytes
SHA-256: 8cf2f90515101447127c9afe229d441428a52928b0d5d43093cc801a15314328
font_01_sfnt_off00007dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC3 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8775 18236 bytes
SHA-256: 4eb58133c0011edd17c13fdf2cbd58e9e1955be73d19b4667037cfe143ff7632

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