Malicious PDF — malware analysis report

Static analysis result for SHA-256 a53ae57c9ede5dd4…

MALICIOUS

PDF

47.0 KB Created: 2021-06-04 03:34:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 66e5f301933def8857d7b9f5af04d661 SHA-1: 27cdaedb16736f7ad1805d2fb6e744971232613e SHA-256: a53ae57c9ede5dd4517d49d77918b8438f89f4be3ce06a72dd71013d3c4e335d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent to redirect the user to potentially harmful content. No scripts were extracted from this sample, but the overall pattern suggests a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/free-spins-coin-master-hack-2021-game-hack PDF link annotation
    • http://library.smpn2-byl.sch.id//repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-free-education_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_004_off00005378.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5378 24160 bytes
SHA-256: b90c77f7b31ff9300471cdfd4a52b13b4650dad3b933b571a7ec74a386531805
font_01_sfnt_off00008a9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9E 2820 bytes
SHA-256: e5f6ec650849eefe6bc6a1649c2875ce35328d23e4196945bba66cc43e5a49d4
font_02_sfnt_off0000943d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x943D 18456 bytes
SHA-256: 8f74d6ddd2abce9f563610cbfcc253ce51c057807514da134dc64dcb58b7111e

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