Malicious PDF — malware analysis report

Static analysis result for SHA-256 8886ddb765351fac…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 07:35:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d2c0a1e95602790e002ed591b6e7cf07 SHA-1: 6caeaf3e505320d527e412b17830e6c9f461050f SHA-256: 8886ddb765351fac6e254cb0d738c83a79131553d13aff196c396427bae2279a
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed as lures for game hacks and free items, directing users to potentially malicious infrastructure. The heuristic firings indicate the PDF is specifically crafted to host a large number of external links, many of which are SEO-optimized to appear legitimate. The presence of a visual download button further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • 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.
  • 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.online/app/406889139/coin-master-free-attack-game-hack In PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/carding-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-become-a-hacker-in-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_off000051c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51C1 24916 bytes
SHA-256: ef39b4790ab410cce36bfd7cccc9b607d884116ee50a1f0aac8181a819218d6f
font_01_sfnt_off00008ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD7 17880 bytes
SHA-256: 96402d2e96280801386aa337121127c59561cdc8f458ec32dbe1421b57db916e

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