Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ef74701c7282bd…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 21:32:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2246e156c2ef0200e2c5c479d7cd66c3 SHA-1: d9c21e410724fa579a9340de30346b6736cccef6 SHA-256: 87ef74701c7282bdcd5efb115bd6a841132e20361fee4240746f4eb86c06ab10
142 Risk Score

Malware Insights

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

The PDF contains numerous links to websites offering game hacks and free currency, a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to drive traffic to potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-stuff-game-hack PDF link annotation
    • https://de-licht.com/image/data/files/roblox-jailbreak-key-card-hack_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/get-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://de-licht.com/image/data/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-get-free-robux-on-roblox-inspect-element_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/how-to-play-heroes-online-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://de-licht.com/image/data/files/hacking-games-roblox_GM431946152.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
font_00_sfnt_off00003118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3118 22800 bytes
SHA-256: 7ffb09942ebd6ee4235d211dc4628f0bc374e7512f97283930d80f4ffd825480
font_01_sfnt_off000063f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F0 18140 bytes
SHA-256: ffbe3bd5e7ca89ebd9867be994f107e79cc056fa0179a9297eb86efc4e13e545

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