Malicious PDF — malware analysis report

Static analysis result for SHA-256 736276e1847d30d7…

MALICIOUS

PDF

37.7 KB Created: 2021-05-24 00:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1d9d60507305d0ed110ab3b4f6e11dd3 SHA-1: 39a72d2460026a00dbb397a9dbdf0c060f182457 SHA-256: 736276e1847d30d7859eee6c8ae43672a30c808dfd75f3fc8afdb19db5f6c946
122 Risk Score

Malware Insights

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

The PDF document uses social engineering by offering a "free generator" for TikTok followers, a common lure for malicious downloads. It contains multiple links to external websites, including one that appears to be a redirector for such generators. The document body explicitly mentions "CLICK HERE TO ACCESS TIKTOK GENERATOR", reinforcing the lure. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to lead the user to a malicious site, likely for malware installation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/835599320/free-tiktok-followers-app-game-hack PDF link annotation
    • http://krymtorg-r.ru/images/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://krymtorg-r.ru/images/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://krymtorg-r.ru/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://krymtorg-r.ru/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://krymtorg-r.ru/images/how-to-get-free-coins-in-coin-master_GM406889139.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_002_off00003168.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3168 24360 bytes
SHA-256: c8b6f919e705223b8996ba0f2f9d8a38a5e3fd41171f4fe92875df00e243b8f3
font_01_sfnt_off00006921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6921 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000730c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730C 17872 bytes
SHA-256: 34129f1c56e014fb2604607ed740d581eed4f4cd55f156cb19b3173e06165e4c

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