Malicious PDF — malware analysis report

Static analysis result for SHA-256 27cb447f365c7ed1…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 04:31:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 481bef8a6015ff5cf5fcb48a5cfff275 SHA-1: 2c2c37fe591b6070423d015d1ce565b7fb208eb7 SHA-256: 27cb447f365c7ed11b734cda88c2c6b284692a248b3ec4997862a47e7529a714
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The document body, though partially garbled, contains text related to 'Free Robux' and a primary malicious URL. The presence of these links and the lure strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful sites.

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/431946152/free-robux-only-1-step-game-hack In PDF document text
    • http://awakeningtruth.org/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://awakeningtruth.org/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://awakeningtruth.org/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://awakeningtruth.org/images/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://awakeningtruth.org/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://awakeningtruth.org/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://awakeningtruth.org/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://awakeningtruth.org/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://www.awakeningtruth.org/images/free-robux-that-actually-works_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
stream_003_off000048e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E4 25016 bytes
SHA-256: 613299ce9fcb625489e09db2410d04937f9b7da5486056ea01b27a3f444f0422
font_01_sfnt_off00008216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 18656 bytes
SHA-256: 070bf31dcf9002553526675ed1cd7b39f0747279791c235f0424fbc506b236c5