Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42b908496feea31…

MALICIOUS

PDF

38.2 KB Created: 2021-05-23 05:45:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 70d08f88cdba51be33a31dcf5ca32763 SHA-1: 906800423f0ea6e81f24761286e605272d14c7bf SHA-256: f42b908496feea319cbd341b2559fafc61a888d2da2cef52f631f00bd158b4e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors disguised as free generators for popular games and services. The document body explicitly mentions 'Free Tiktok Comments' and 'CLICK HERE TO ACCESS TIKTOK GENERATOR', reinforcing the lure. The presence of multiple malicious links suggests an attempt to lead the user to a site that may steal credentials or deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/835599320/free-tiktok-comments-game-hack In PDF document text
    • http://shapemybrows.id/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-get-hacks-on-minecraft_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_002_off00003198.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3198 26264 bytes
SHA-256: 76635af72fc19d020a8f34f4d72e467655b57b90540c610f3cc633ba54dc320a
font_01_sfnt_off00006bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF9 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000075ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 17716 bytes
SHA-256: be925199a27c2d273bbfb828ef38ce2fcf452edcc9d534dc6164d07d4183a457

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