Malicious PDF — malware analysis report

Static analysis result for SHA-256 13aff48f77521c04…

MALICIOUS

PDF

49.4 KB Created: 2021-05-21 04:22:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c54f762e5a3d8c1cdc492d7d50aea8c8 SHA-1: 6b7458c1bef36a31b3095986930a6b3f2d7ef9de SHA-256: 13aff48f77521c04980b43517722f77ddd74b2c3a6bc46dcfa927149e2239e7b
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious. It uses a seed-phrase/secret-recovery lure. 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 suspicious score 0.3699

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/free-links-coin-master-game-hack PDF link annotation
    • https://jogjaindotrans.com/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/free-coins_GM406889139.pdfIn PDF document text
    • https://jogjaindotrans.com/ckfinder/userfiles/files/get-free-spins-coin-master-2021_GM406889139.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003467.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3467 27540 bytes
SHA-256: 15c5e1b7ca8b739d93e8f97068e312bccf0dde85894abed5abaf5b16fe01725a
font_01_sfnt_off000074b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00007f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7E 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off000092a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A3 17880 bytes
SHA-256: c5130e18caf6f7222c4492e4e2e2fc6b4580e14129763dcab090a363ad6db2dc
font_04_sfnt_off0000b35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB35B 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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