Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a184fbfc2430af…

MALICIOUS

PDF

42.1 KB Created: 2021-05-18 23:46:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 900c205fa9ef890581f5341db1e49ac6 SHA-1: 170ea32b8be297c45e7ce78fa1e310370e714188 SHA-256: 60a184fbfc2430aff7160923a445d6f7fe165603e8f8be607c04518805b3930e
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-free-spins-link-download-today-game-hack PDF link annotation
    • http://per-bittner.de/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/mc-update_GM479516143.pdfIn PDF document text
    • http://per-bittner.de/images/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-firebird-card-free_GM406889139.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_off000048eb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EB 24568 bytes
SHA-256: 0d5a304ee92a3c702e3318f06ce1133131584af8905303b883ba5c8a2e9d3a56
font_01_sfnt_off000080aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AA 18816 bytes
SHA-256: 7984ac734f2c2edb41e517847f194607c55f1e409037ad7870af27278dae38db

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