Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5684b4767f83a2d…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 01:18:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0fcb8aa6ff033864d35e0c28ef7537e8 SHA-1: a2f025a0192af64f5c9fb8c282c29a20e41882e2 SHA-256: a5684b4767f83a2d505590d07ad01d784af9a3f28859f332827b657b45fabb3f
220 Risk Score

Malware Insights

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

The PDF contains numerous links disguised as game hacks and generators for popular games like Roblox and Coin Master. These links likely lead to phishing sites or downloaders for malicious software. The document body and heuristics indicate a lure to exploit user interest in free in-game items, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/how-to-get-everything-free-in-roblox-on-ipad-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hack-roblox-traspasar-paredes_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-roblox-games-on-mobile_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-200-dollar-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-clothes-on-roblox-on-your-phone_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hack-roblox-bee-swarm-simulator-apk_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-use-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-mod-free-download_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
font_00_sfnt_off00002c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5E 22648 bytes
SHA-256: 77c93f718483daca5b6566228ead6bd087adc6abf8991691700a22dc6627470d
font_01_sfnt_off00005efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFE 19848 bytes
SHA-256: b18ca79374c65881f8dd3bf35bfceeccab0d34fcad9a6b97c8b7c8481c3e0b54

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